1 gram mg. Calculation of the dosage of medicines

05.08.2019 Beverages

Instruction

To convert grams to milligrams, multiply the number of grams by a thousand. That is, use the following simple formula:
Kmg \u003d Kg * 1000, where
Kmg - the number of milligrams,

Kg is the number of grams.
So, for example, the mass of one tablet of activated carbon is 0.25 grams. Therefore, its mass, expressed in milligrams, will be: 0.25 * 1000 \u003d 250 (mg).

Marijuana - There is now increasing acceptance of marijuana as a legal pain reliever. Doctors in some states may prescribe it to relieve chronic pain that comes from arthritis, migraines, Crohn's disease, or other ongoing pain problems when other medications have failed. It works by blocking the pain sensations felt by the peripheral nerves. The cannabinoids in marijuana bind to endocannabinoid receptors throughout the body and may reduce pain. Some studies show that it can also slow the progression of cancer and increase appetite.

If the number of grams is an integer, then to convert grams to milligrams, simply add three zeros to the right of it.
For example, one tablet of ascorbic acid with glucose weighs 1 gram. So, its mass in milligrams will be: 1,000.

If the number of grams is expressed as a decimal fraction, then move the decimal point three digits to the right.
For example, the glucose content in one tablet of ascorbic acid with glucose is 0.887 grams. Therefore, in milligrams, the mass of glucose will be 887 mg.

Forty states and the District of Columbia allow some legal uses of marijuana, mostly for. Hydrocodone - Hydrocodone is only available in combination with other ingredients, with different products prescribed for different uses. Some products are used to relieve moderate to severe pain, while others fight coughs, according to the National Institutes of Health. An opioid analgesic, hydrocodone relieves pain by changing the way the brain and nervous system respond.

It can be addictive and drug abuse, including hydrocodone, has become a problem in recent years. Now, to use these drugs, patients must get a written prescription from a doctor - instead of one given orally over the phone. And gas stations are prohibited; Patients had to register with their doctors in order to receive another prescription.

If there are less than three digits after the decimal point, pad the missing characters with zeros.

So, for example, the content of ascorbic acid in one tablet of ascorbic acid with glucose is 0.1 grams. In milligrams, this will be - 100 mg (according to the rule, it turns out 0100 mg, but the leading zeros on the left are discarded)..

If all initial data are given in grams, and the result must be presented in milligrams, then carry out all intermediate calculations in grams, and translate milligrams only as a result of calculations.
So, for example, one tablet of allochol contains:

Fentanyl - Fentanyl is an over-the-counter pain medication often prescribed for cancer patients. Patients also need to get used to the effects of drugs. According to the National Institutes of Health, fentanyl itself is a narcotic and alters how the brain and nervous system respond to pain. This medication is available as a lozenge, sublingual tablet, film and buccal tablet, and injectable form. It is intended for sudden episodes of pain and should not be used more than four times a day.

An overdose may cause drowsiness, dizziness, confusion, breathing problems, or smaller pupils. Morphine. Patients take morphine for moderate to severe pain. It is an opiate analgesic and alters the response of the brain and nervous system to pain. Forms of morphine include a tablet and a solution taken every four hours if needed. Controlled or extended release tablets and controlled or extended release capsules are designed for patients requiring around the clock pain relief.

Dry bile - 0.08 g,

Dried garlic - 0.04 g,

Nettle leaves - 0.005 g,

Activated carbon - 0.025 g.

To calculate: how many milligrams of active substances are contained in one tablet of allochol, add up the masses of all components, expressed in grams, and translate the result into milligrams:

0.08+0.04+0.005+0.025=0.15 (d).

0.15*1000=150 (mg).

Gram is a unit of mass measurement belonging to the system of metric measures. Gram is one of the basic units of the CGS system of absolute measures (centimeter, gram, second) - widely used before the adoption of the international measurement system (SI). Referred to as g or g. Multiple unit of mass kilogram is one of the basic SI units, denoted by kg or kg.

According to the National Institutes of Health, morphine overdose can lead to serious consequences such as breathing problems, unconsciousness, drowsiness, slow heartbeat, blurred vision, nausea, and fainting. Morphine may also be habit-forming.

Typically administered intravenously by medical professionals for anesthetic purposes, such as when a patient is undergoing surgery. Experts say it's not approved for sleep disorders, according to the Food and Drug Administration. The drug itself does not provide pain relief, but makes the patient unconscious. The patient wakes up almost immediately after stopping the infusion, experts say. The pressure and suppresses breathing, which is why patients' heart function and breathing need constant monitoring, according to the Harvard Health Blog.

In ordinary life, we very often have to deal with the measurement of weight, whether it is our own weight or a purchased product. However, most often it is kilograms and grams. And in very rare cases - milligrams. Despite the seeming simplicity of the question, not every person will be able to immediately remember how many milligrams are in a gram. Although very often his life depends on the correct answer to this question.

However, the abuse of propofol in medical circles has been in recent years. Professor of Chemistry at the 2nd Lyceum of Heraklion. Mass: It is a measure of resistance that shows a body in terms of changes in its speed and expresses the amount of matter contained in the matter. Aliquots of kg are grams, milligrams and micrograms. Volume: This is the space that a body occupies. However, in chemistry, volume is usually measured in liters or milliliters. Due to their slight difference, ml and cm3 can be used indiscriminately.

Density: defines the amount of mass of a body to its corresponding volume at constant pressure and temperature conditions. UNIT CONVERSION The conversion from one device to another is done using a conversion factor. ➢ The conversion factor is the proportion by which we multiply the unit to convert. In the numerator of this fraction, we write the required unit, and in the denominator, the unit that we must simplify. ➢ Next, next to the numerators and denominators, we write the ratio between the two sizes. ➢ Finally, we do unit simplifications as well as algebraic operations.

What unit of measure is the gram

Before remembering how many milligrams are in a gram, it is worth brushing up on the knowledge of a gram. So, the gram is a unit of the SI system, designed to determine the mass. Its homeland is France, hence the melodic name gramme. The gram as a unit of measurement was introduced in the last decade of the eighteenth century.

By weight, it is equal to 0.001 kilograms, (0.000001 tons, 0.00001 centners) in other words, there are a thousand grams in one kilogram.

Gram is denoted by the letter "g" in Cyrillic and the letter g in Latin.

Like other SI units, grams are used to measure weight in science, technology and in everyday life in most countries of Europe and the world. However, in the United States and some other countries, in the old fashioned way, weight is measured in pounds (pound), it is equal to approximately 0.45 kilograms. As in the old days, some countries have their own numerical equivalent of the pound, which is why there is confusion when converting to SI. In connection with this situation, countries using pounds are gradually starting to switch to kilograms.

An interesting fact, Russia also had its own pound, and it was a little heavier than the modern one.

In the system of measuring weight in pounds, there is also a kind of analogue of a gram - an ounce (oz). It is equal in weight to 28.4 grams.

How many milligrams in one gram

Kilograms, centners and tons are units of measurement that are larger than a gram. But there are those that are smaller than it, the so-called "submultiple units". These include: milligram (mg-mg), microgram (mcg-mkg), nanogram (ng-ng) and pictogram (pg-pg). In addition to the milligram, all the rest are rarely used in everyday life, since there is no special need, and to measure them, you need an ultra-sensitive scale, which is not cheap.

The answer to the question of how many milligrams are in 1 gram is the number 1000, that is, one gram consists of a thousand milligrams, or 0.001 grams in one milligram.

Why do you need to know how many milligrams are in a gram

A milligram is a tiny measure of weight, which at first glance seems unsuitable for measuring anything with it in everyday life. After all, no one will measure sugar or cereals in milligrams.

However, if a person feels unwell and needs medication, starts calculating the required dosage of the drug, he will immediately understand why it is important to know how many milligrams are in a gram. After all, many drugs are prescribed in relation to the weight of the patient. And if a sick child or teenager, then the dose of the medicine should be small, most often less than a gram, so you need to clearly understand the gram / milligram ratio, otherwise you can cause irreparable harm to health.

For example, on vacation the child was bitten by a bee, the bitten place was swollen, which means that it is necessary to take an antihistamine. However, in the first-aid kit, this medicine is available only in tablets. After reading the instructions carefully, you can understand that one tablet weighs 1 gram, but children weighing up to 10 kilograms can be given no more than 250 milligrams of the drug at a time. With knowledge of a milligram, you can easily calculate the allowable dose: 1 g \u003d 1000 mg, 1000/250 \u003d 4, it turns out that only a quarter of a tablet can be given to a child at a time.

In recent years, it has become fashionable to prepare cosmetic skin care products with your own hands.
Especially popular was the manufacture of so-called soap from scratch. Despite the simplicity of the process, it is important to follow the dosage exactly, otherwise you can get burned. After all, if it is incorrect to calculate the proportion of oils and caustic soda, then either not all of the soda will interact with the oils and the rest of it will get on the skin when using soap; or there will be too much oil and the soap will not clean well.

milligram and milliliter

When analyzing the topic of milligrams, one cannot but mention the milliliter (ml). They are very often confused. It is worth remembering that milligrams measure weight, and milliliters measure volume. So the liquid is measured only in milliliters, and the scale for dividing syringes is milliliter, not milligram. Tablets and powders are always measured in milligrams.

These two measures are equal in some cases, in other situations it is necessary to know the density of the liquid being measured in order to accurately calculate its weight.

Almost every day when shopping in a store, people have to convert kilograms to grams and vice versa, so this skill has been brought to automatism. In the case of grams and milligrams, this is all done in a similar way. Therefore, having learned how many milligrams are in a gram, you can then, if necessary, carry out these calculations yourself.

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1 milligram [mg] = 0.001 gram [g]

Initial value

Converted value

kilogram gram exagram petagram teragram gigagram megagram hectogram decagram decigram centigram milligram microgram nanogram picogram femtogram attogram dalton, atomic mass unit kilogram-force sq. sec/meter kilopound kilopound (kip) slug lbf sq. sec/ft pound troy pound ounce troy ounce metric ounce short ton long (imperial) ton assay ton (US) assay ton (UK) ton (metric) kiloton (metric) centner (metric) centner US centner British quarter (US) quarter (UK) stone (US) stone (UK) ton pennyweight scruple karat gran gamma talent (O.Israel) mina (O.Israel) shekel (O.Israel) bekan (O.Israel) hera (O.Israel) talent (Ancient Greece) mina (Ancient Greece) tetradrachm (Ancient Greece) didrachma (Ancient Greece) drachma (Ancient Greece) denarius (Ancient Rome) ass (Ancient Rome) codrant (Ancient Rome) lepton ( Rome) Planck mass atomic mass unit electron rest mass muon rest mass proton mass neutron mass deuteron mass Earth mass Sun mass Berkovets pud Pound lot spool share quintal livre

More about mass

General information

Mass is the property of physical bodies to resist acceleration. Mass, unlike weight, does not change depending on the environment and does not depend on the gravitational force of the planet on which this body is located. mass m determined using Newton's second law, according to the formula: F = ma, where F is power, and a- acceleration.

Mass and weight

In everyday life, the word "weight" is often used when talking about mass. In physics, weight, unlike mass, is a force acting on a body due to the attraction between bodies and planets. Weight can also be calculated using Newton's second law: P= mg, where m is the mass, and g- acceleration of gravity. This acceleration occurs due to the force of attraction of the planet near which the body is located, and its magnitude also depends on this force. The acceleration of free fall on the Earth is 9.80665 meters per second, and on the Moon - about six times less - 1.63 meters per second. Thus, a body weighing one kilogram weighs 9.8 Newtons on Earth and 1.63 Newtons on the Moon.

gravitational mass

The gravitational mass shows what gravitational force acts on the body (passive mass) and with what gravitational force the body acts on other bodies (active mass). With an increase active gravitational mass body, its force of attraction also increases. It is this force that governs the movement and arrangement of the stars, planets, and other astronomical objects in the universe. The tides are also caused by the gravitational forces of the Earth and the Moon.

With the increase passive gravitational mass the force with which the gravitational fields of other bodies act on this body also increases.

inertial mass

Inertial mass is the property of a body to resist motion. It is precisely because the body has mass that a certain force must be applied to move the body from its place or change the direction or speed of its movement. The larger the inertial mass, the greater the force required to do this. The mass in Newton's second law is precisely the inertial mass. The gravitational and inertial masses are equal in magnitude.

Mass and relativity

According to the theory of relativity, a gravitating mass changes the curvature of the space-time continuum. The more such a mass of a body, the stronger this curvature around this body, therefore, near bodies of large mass, such as stars, the trajectory of light rays is curved. this effect in astronomy is called gravitational lenses. On the contrary, far from large astronomical objects (massive stars or their clusters, called galaxies), the movement of light rays is rectilinear.

The main postulate of the theory of relativity is the postulate of the finiteness of the speed of light propagation. Several interesting implications follow from this. First, one can imagine the existence of objects with such a large mass that the second cosmic velocity of such a body will be equal to the speed of light, i.e. no information from this object will be able to get to the outside world. Such space objects in the general theory of relativity are called "black holes" and their existence has been experimentally proven by scientists. Secondly, when an object moves at a near-light speed, its inertial mass increases so much that the local time inside the object slows down compared to time. measured by stationary clocks on Earth. This paradox is known as the "twin paradox": one of them goes on a space flight at near-light speed, the other remains on Earth. Upon returning from a flight twenty years later, it turns out that the twin astronaut is biologically younger than his brother!

Units

Kilogram

In the SI system, mass is measured in kilograms. The kilogram standard is a metal cylinder made of an alloy of iridium (10%) and platinum (90%), weighing almost as much as a liter of water. It is kept in France, at the International Bureau of Weights and Measures, and its copies are all over the world. The kilogram is the only unit that is determined not by the laws of physics, but by a standard made by people. The derivatives of the kilogram, gram (1/1000 of a kilogram), and ton (1000 kilograms) are not SI units, but are widely used.

Electron-volt

An electron volt is a unit for measuring energy. Usually it is used in the theory of relativity, and the energy is calculated by the formula E=mc², where E is the energy m- weight, and c is the speed of light. According to the principle of equivalence of mass and energy, the electron volt is also a unit of mass in the system of natural units, where c equals one, which means that mass equals energy. Basically, electronvolts are used in nuclear and atomic physics.

Atomic mass unit

Atomic mass unit ( a. eat.) is for the masses of molecules, atoms, and other particles. One a. e.m. is equal to 1/12 of the mass of a carbon nuclide atom, ¹²C. This is approximately 1.66 × 10 ⁻²⁷ kilograms.

Slug

Slugs are used primarily in the British imperial system of measurement in the UK and some other countries. One slug is equal to the mass of a body that is moving at an acceleration of one foot per second per second when a force of one pound force is applied to it. This is approximately 14.59 kilograms.

solar mass

Solar mass is a measure of mass used in astronomy to measure stars, planets and galaxies. One solar mass is equal to the mass of the Sun, that is, 2 × 10³⁰ kilograms. The mass of the Earth is about 333,000 times less.

Carat

Carats measure the mass of precious stones and metals in jewelry. One carat is equal to 200 milligrams. The name and the value itself are associated with the seeds of the carob tree (in English: carob, pronounced carob). One carat used to be equal to the weight of a seed of this tree, and buyers carried their seeds with them to check if they were being deceived by sellers of precious metals and stones. The weight of a gold coin in ancient Rome was equal to 24 carob seeds, and therefore carats began to be used to indicate the amount of gold in the alloy. 24 carats is pure gold, 12 carats is half gold alloy, and so on.

Gran

The gran was used as a measure of weight in many countries before the Renaissance. It was based on the weight of grains, mainly barley, and other crops popular at the time. One grain is equal to about 65 milligrams. It's a little over a quarter carat. Until carats became widespread, grains were used in jewelry. This measure of weight is used to this day to measure the mass of gunpowder, bullets, arrows, as well as gold foil in dentistry.

Other units of mass

In countries where the metric system is not accepted, British imperial system mass measures are used. For example, in the UK, USA and Canada, pounds, stone and ounce are widely used. One pound is equal to 453.6 grams. Stones are mainly used only to measure the mass of a person's body. One stone is approximately 6.35 kilograms or exactly 14 pounds. Ounces are mostly used in cooking recipes, especially for foods in small portions. One ounce is 1/16 of a pound, or approximately 28.35 grams. In Canada, which formally converted to the metric system in the 1970s, many products are sold in round imperial units such as one pound or 14 fl oz, but are labeled by weight or volume in metric units. In English, such a system is called "soft metric" (eng. soft metric), in contrast to the "hard metric" system (eng. hard metric), which indicates the rounded weight in metric units on the packaging. This image shows "soft metric" food packages showing weight in metric units only and volume in both metric and imperial units.

Do you find it difficult to translate units of measurement from one language to another? Colleagues are ready to help you. Post a question to TCTerms and within a few minutes you will receive an answer.

The basic unit of mass is gram and its derivatives - milligram and microgram.

Common abbreviations:

gram - g;
milligram - mg;
microgram - mcg.

In 1 g - 1,000 mg or 1,000,000 mcg.
In 1 mg - 1,000 mcg.

1.0 is a gram;
0.001 is a milligram;
0.000001 is a microgram.

The basic unit of measurement for volume is milliliter . A liter habitual in everyday life as a dose is rarely used, but still it is sometimes used. For example, "the volume of fluid required for a cleansing enema is 1 liter" or "the daily volume of infusion therapy is 1.5 liters."

Common abbreviations:

liter - l;
milliliter - ml.

In 1 liter - 1000 ml.

The unit of volume must be specified!

If it is not indicated, that is, 15.0 is simply written, it means that this is not a volume, but a mass - 15 grams. If we are talking about milliliters, then next to the number 15 it should be written - ml: 15.0 ml.

Please pay attention: the most common parenting mistake is when they get confused MG and ML.

Once again, we pay attention, because this particular moment is extremely relevant!

Do not confuse units of mass and units of volume - this is very, very important!

Whenever a drug is prescribed parenterally in a certain amount of ml, we are talking about the fact that this volume will be measured with an injection syringe of the appropriate size or an infusion solution bottle with appropriate volume marks will be used.

Packages of modern medicines dispensed in milliliters for reception inside without fail contain special measuring devices: caps, pipettes, syringes, cups, measuring spoons.

If there is nothing like this, but the medicine is still prescribed inside and in ml, which means that injection syringes or special graduated measuring cups sold in pharmacies should be used to measure the required volume.

A non-standard and inaccurate unit of volume is a drop . The volume of a drop is largely determined by the physical properties of the dispensed liquid.

For example, the volume of one drop alcohol solution is on average 0.02 ml, and the volume of one drop water solution can range from 0.03 to 0.05 ml.

Pharmacists and doctors have long agreed that the standard pharmaceutical, medical measure of a drop is 0.05 ml.

Thus, 1 ml = 20 drops.

When a solution of a particular drug is prescribed to your child in drops and we are talking about a modern drug, the package usually contains a special pipette or the bottle cap is a special dropper.

If there is no pipette or dropper cap, then you can use a standard medical pipette sold at any pharmacy. If many drops are prescribed, it is quite possible to use a disposable syringe to measure the required volume of fluid.

Assigned to 10 drops - so it's 0.5 ml; 40 drops - respectively, 2 ml.

You can even use the formula:

number of ml = number of drops divided by 20.

The main thing to remember is that whenever a certain drug is prescribed in drops, and you cannot figure out how to extract and measure these drops, so, in such situations, it is clearly understood that the volume of one drop is 0.05 ml. And this means that, having a medical syringe with a volume of 1 ml in the house, you can easily and absolutely accurately determine the required amount of medicine: 2 drops - 0.1 ml, 3 drops - 0.15 ml, 5 drops - 0.25 ml etc.

Even more non-standard (compared to drops) units of volume are various household spoons, which are sometimes (but less and less often) used to dose inactive and relatively safe drugs.

Standard volume of spoons in ml:

tea room spoon - 5 ml;
dessert spoon - approximately 10 ml (there is no single standard);
canteen spoon - in the CIS countries - 18 ml, in the USA, Canada - 15 ml, in Australia - 20 ml;

In some countries, the concept of a baby spoon is used.

children's spoon - 10 ml.

To completely close the topic of kitchen utensils for measuring volume, recall glass . Dosing with glasses is more common in cooking, but is sometimes used in medicine to measure the volume of infusions, decoctions, rinses, etc.

one glass - 200 ml.

The active substance is present in a liquid medicinal product at a certain concentration. The digital value of this concentration is reflected in such a seemingly obvious, but not always clear expression, as solution percentage .

The expression "5% solution of ascorbic acid" does not look complicated and mysterious at all. But still, some explanations should be given in order to finally dot the i's.

So, the concentration in pharmacology is usually displayed as number of units of mass per unit volume. Thus, the expression "1% solution" means that 100 ml of liquid contains 1 g of the active substance.

In the vast majority of cases, the amount of fluid prescribed to a child is measured in milliliters. Therefore, we recalculate:
100 ml - 1 g;
10 ml - 0.1 g;
1 ml - 0.01 g.
0.01 g is 10 mg. Quite a logical conclusion: in 1 ml of 1% solution contains 10 mg of active ingredient .

We train:

in 1 ml of a 5% solution of ascorbic acid - 50 mg of ascorbic acid;
in 1 ml of a 50% solution of analgin - 500 mg of analgin;
in 1 ml of a 0.1% solution of loratadine - 1 mg of loratadine;
in 1 ml of 66.7% solution of lactulose - 667 mg of lactulose;
in 1 ml of a 0.05% solution of chlorhexidine - 0.5 mg of chlorhexidine ...

Manufacturers of children's dosage forms are very skeptical about parental mathematical abilities. The instructions may well say “loratadine solution 0.1%”, but the package will indicate in capital letters: “loratadine 1 mg / 1 ml” or “loratadine 5 mg / 5 ml”.

A huge number of liquid medicines are available in different concentrations. In 1 ml of a suspension of paracetamol there may be 20, or maybe 50 mg: “120 mg / 5 ml” or “250 mg / 5 ml” will be written on the box with the suspension. The pharmacy worker will not be able to release correctly, and the mother will not be able to correctly give the child paracetamol prescribed at a dose of “5 ml of suspension” - you need to know what concentration of the suspension is in question. In this way, Whenever your child is prescribed anything liquid, it is important to make sure that you know not only the name of the solution, but also its strength!

The situation when a doctor prescribes a solution, syrup, suspension, etc., but does not indicate the concentration, is nevertheless possible.

So, for example, lactulose syrups are produced by almost all manufacturers in the form of a 66.7% solution. And when the doctor wrote: Lactulose syrup 5 ml in the morning before breakfast”, then there is no error in this.

Another option: we are talking about a drug prescribed under a specific trade name.

An example of such an assignment: nurofen for children, suspension, at temperatures above 39 ° C 10 ml orally". Suspension called "Nurofen for children" is available in only one concentration - 100 mg / 5 ml. Therefore, everything is written correctly, it is impossible to make a mistake.

Another question is that in a pharmacy they can tell you something like this: “We do not currently have Nurofen for children in suspension. We have another medicine, but in the composition of ibuprofen, as in Nurofen, and this is different - only in tablets of 0.4. Everything else is in the regional center, the bus tomorrow morning ... "

And then you calculate:

10 ml with a concentration of 100 mg / 5 ml - this means we were prescribed 200 mg.

And in a tablet 0.4 is 400 mg.

So, we will persuade Mashenka to swallow half a tablet ...

Another fundamentally important point. Knowing the concentration is necessary not only when drugs are taken orally and are dosed in ml. For topical application and dosing with drops, this is no less important.

And if assigned xylometazoline 2 eachdrops in each nostril 3times a day”, then before dripping, you should definitely clarify which xylometazoline we are talking about - 0.1% or 0.05%?

The concentration of the active substance in dermatological products is also indicated by percentages, but there is no specificity here. So if it says " hydrocortisone ointment 1% ”, This means that 1 ml of this ointment contains 10 mg of hydrocortisone. But just like with a suspension of paracetamol, you can’t just write “hydrocortisone ointment”, since this ointment comes in 0.5%, 1%, 2.5% ...

Now about dosing using special units . Always, when it comes to certain dosage units, the number of these units is linked either to a unit of volume, or to a specific package or dosage form. And this relationship must be clarified without fail!

That is, you must definitely know that in 1 ml of solution insulin contains exactly 40 units or exactly 100 units of the drug.

You need to know exactly what is in this tablet with pancreatin contains a dose equal to 10,000 units of lipase. Exactly 10 thousand, not 40 or 25.

You must know that it is in this sterile vial that there are 500,000 units of sodium salt benzylpenicillin.

Once again, I would like to emphasize that always, when something is prescribed in units, it is imperative to clarify in what volume, in which vial, in which capsule exactly this number of units is contained.

The use of the name of a particular dosage form as a dosing unit is associated with enormous difficulties and many errors.

In one tablet of the same pharmaceutical agent, there may be a different amount of active ingredient. So, for example, in one tablet paracetamol may be 80, 120, 125, 200, 285, 325, 500 or 564 mg. Obviously, no one will be able to properly sell in a pharmacy or give a child paracetamol prescribed in a dose of "1 tablet".

Therefore, next to the name of the drug and the selected dosage form, the amount of the active substance in this particular dosage form prescribed for a particular patient should be indicated.

Examples:

calcium gluconate, tablets of 0.5;
cephalexin, capsules of 0.25.

An indication of a certain tablet or capsule, in the absence of information about the content of the active substance, can in some cases be justified by the fact that there is no choice of tablets of this particular medication.

This is possible if:

the drug is produced in this dosage form only with a strictly defined amount of active substance. For instance, ornidazole Available in tablets of 0.5. There are no other pills. Make no mistake;
the drug is prescribed under a trade name, and a specific manufacturer produces it only in such a dosage form - there is no choice. For example, one tablet suprastin always contains 0.025 chloropyramine. Therefore, if suprastin is prescribed one tablet twice a day, you will not be mistaken;
a drug is a strictly defined combination of certain ingredients protected by a trade name. For instance, decathylene, lozenges. There is no other decathylene. You won't be mistaken.

We already know that the optimal way of dosing drugs to children is based on the relationship of the dose with the weight of the child.

Consider the intricacies of such dosing using the example of the most popular children's antipyretic - paracetamol.

From paragraph 2.1. we know that single dose paracetamol is 10-15 mg/kg.

We have a child weighing 15 kg. Thus, a single dose of the drug is from 150 (10 x 15) to 225 (15 x 15) mg.

We bought a 120 mg/5 ml suspension. This means that in one ml - 24 mg. And we need from 150 to 225. So, our single dose is approximately equal to 6.2-9.3 ml.

We bought a 250 mg/5 ml suspension. This means that in one ml - 50 mg. And we need from 150 to 225. So, our single dose is 3-4.5 ml.

We bought 200mg tablets. And we need from 150 to 225. So, our single dose is 1 tablet.

We bought 325mg tablets. And we need from 150 to 225. So our single dose is half a tablet.

Now let's deal with daily dose the same paracetamol. If there are indications, this medicine can be given repeatedly during the day, but not more than 4-5 times, and it is very important that the interval between doses be at least 4 hours.

All the same child - body weight 15 kg. The maximum daily dose of the drug should in no case exceed 60 mg / kg. This means that our baby can take no more than 15 x 60 - 900 mg per day.

We bought a 120 mg/5 ml suspension. This means that in one ml - 24 mg. And we need no more than 900. So, our maximum daily dose is 37.5 ml (900/24).

We bought a 250 mg/5 ml suspension. This means that in one ml - 50 mg. And we need a maximum of 900 per day. This means that our daily dose should not exceed 18 ml (900/50).

We bought 200mg tablets. So, no more than four tablets per day.

We bought 325mg tablets. So our maximum daily dose is 2 tablets and another three-quarters of a tablet.

Already this enumeration of our shows that, knowing the weight and the required single / daily dose, it is quite easy to make a rational choice of dosage form. It is obvious that in most cases it is much easier to give a child 3 ml of suspension than 10 ml or half a tablet. Therefore, for a child weighing 15 kg, the optimal dosage form of paracetamol will probably be a suspension of 250/5 ml.

Even more indicative in this aspect is the choice of the optimal dose of paracetamol for rectal administration.

It is known that when using suppositories, a single dose of paracetamol is higher than when taken orally, and is 20-25 mg / kg. Thus, a child weighing 10 kg should receive a suppository containing 200 to 250 mg. We go to the pharmacy, and there it turns out that paracetamol suppositories are on sale, containing the active substance in an amount of 50, 80, 100, 125, 150, 250, 300, 500, 600 and even 1,000 mg. In our situation, it is most logical to buy candles of 250 mg and use them with a minimum load for the child's psyche. But you can not know all this and mock the child by putting two 100 mg candles into it, or mock yourself by trying to cut off half of the 500 mg candle.

We also draw your attention to the fact that a careful study of the sheet with medical prescriptions in many cases will allow you to save significant funds.

Assignment example: " azithromycin suspension. 200 mg 1 once a day half an hour before meals, 3 consecutive days". We go to the pharmacy, and there it turns out that the antibiotic azithromycin in suspension is sold in the following packages:

powder for suspension 100 mg/5 ml, bottle 20 ml;
powder for suspension 200 mg/5 ml, 15 ml vial;
powder for suspension 200 mg/5 ml, 30 ml vial;
powder for suspension 200 mg/5 ml, bottle 20 ml.

It is clear that the optimal choice in our situation is 200 mg / 5 ml, a 15 ml bottle - this is just enough for the prescribed course of treatment. Any other packaging is not economically viable: either you have to buy more, or it remains.

Unfortunately, there is often a situation where the doctor simply does not have time to follow the rapidly changing assortment of pharmacies. And in this case, such appointments are quite possible: loratadine 5 mg 1once a day for 2weeks". This, of course, is wrong, but a very slight parental intellectual effort can solve the problem.

So let's go to the pharmacy. - We need loratadine, 5 mg.

It turns out that loratadine is available in tablets of 10 mg, as well as in syrups or suspensions - 1 mg / 1 ml.

5 mg is half a tablet or 5 ml of syrup. We don’t want to share pills, and our baby has problems swallowing pills, so we get liquid-tasty and give what the doctor ordered ...

By the way, before buying, we carry out simple calculations: 5 ml per day, yes for 2 weeks, this is 5 x 14 - it turns out that 70 ml is needed for a course of treatment. How much is in the bottle? We are interested: it turns out that in one bottle of syrup or suspension of loratadine there can be 30, 50, 60, 100, 120 and 150 ml. It is probably the most rational to buy a bottle of 100 ml - please give ...

And the last thing I would like to draw your attention to. Whenever a doctor prescribes to divide tablets, this is either indicated by words (half, third, quarter), or by a fraction: 1/2, 1/3, 1/4.

And if it says "calcium gluconate 0.5" - this is not half a tablet (!), It's half a gram - 0.5 g.

0.25 is not a quarter of a tablet, it is 0.25 g.

Here and below, when we say "basic unit", we mean the unit, basic in terms of drug dosing. That is, we know that from the point of view of the international system of units (International System, SI), the basic unit of mass is the kilogram (kg), and the standard unit of volume is the cubic meter (m 3).

What unit of measure is the gram

By weight, it is equal to 0.001 kilograms, (0.000001 tons, 0.00001 centners) in other words, there are a thousand grams in one kilogram.

Gram is denoted by the letter "g" in Cyrillic and the letter g in Latin.

An interesting fact, Russia also had its own pound, and it was a little heavier than the modern one.

In the system of measuring weight in pounds, there is also a kind of analogue of a gram - an ounce (oz). It is equal in weight to 28.4 grams.

How many milligrams in one gram

The answer to the question of how many milligrams are in 1 gram is the number 1000, that is, one gram consists of a thousand milligrams, or 0.001 grams in one milligram.

Why do you need to know how many milligrams are in a gram

A milligram is a tiny measure of weight, which at first glance seems unsuitable for measuring anything with it in everyday life. After all, no one will measure sugar or cereals in milligrams.

milligram and milliliter

These two measures are equal in some cases, in other situations it is necessary to know the density of the liquid being measured in order to accurately calculate its weight.

The school ended a long time ago and the basic knowledge is somewhat shaken. Not so much, of course, as to completely forget the metric values, but you can’t immediately answer how many mg in 1 gram.

Restoring memory

From arithmetic we know that 1 g is a multiple of 1 kg, that is, a thousandth of a kilogram. And when you need to find out how many grams are in a kilogram, we multiply the figure denoting kilograms by a thousand and get:

1 kg x 1000 \u003d 1000 g, or 1 kg \u003d 10 3 g.

So, a milligram is also a thousandth of a value, which is called a gram.

And similarly, the problem is solved when you need to find out how many milligrams are in it.

We attribute three zeros to the number that indicates the amount of g.

1 g x 1000=1000 mg, or 1 g=10 3 mg. Here is such a simple answer to the question - how many mg are in 1 gram.

Putting knowledge into practice

Life constantly confronts us with a situation where we have to solve such arithmetic problems. Most often, this occurs when taking medications.

For example, if the instructions for use say that more than 0.2 g of the drug should not be consumed per day, and the weight of 25 mg is indicated on the tablets in the blister, then you need to find out how many tablets you can use.

Solution algorithm: 0.2 g x1000 = 200 mg, 200 mg: 25 mg = 8 tablets.

But the reverse conversion from milligrams to grams is also common, especially when cooking or for chemical solutions in household

We remember that if 1 g = 10 3 mg, then 1 mg = 10 -3 g or 1 mg = 0.001 g.

Suppose, according to the recipe, we need to add 300 mg of granulated sugar and 800 mg of salt somewhere, and our scales measure only g.

Let's translate the required values into the desired unit of measurement.

300:1000=0.3 g or 300 x 0.001=0.3 g

800:1000=0.8 g or 800 x 0.001=0.8 g

Thus, relying on mnemonics, i.e. taking as a basis an analogue of a kilogram and a gram, it is possible to strengthen in memory the conversion of grams to milligrams.

And here is some more interesting information in the table below:

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Instruction

To convert grams to milligrams, multiply the number of grams by a thousand. That is, use the following simple formula:
Kmg \u003d Kg * 1000, where
Kmg - the number of milligrams,

Kg is the number of grams.
So, for example, the mass of one tablet of activated carbon is 0.25 grams. Therefore, its mass, expressed in milligrams, will be: 0.25 * 1000 \u003d 250 (mg).

If there are less than three digits after the decimal point, pad the missing characters with zeros.

Dry bile - 0.08 g,

Dried garlic - 0.04 g,

Nettle leaves - 0.005 g,

Activated carbon - 0.025 g.

To calculate: how many milligrams of active substances are contained in one tablet of allochol, add up the masses of all components, expressed in grams, and translate the result into milligrams:

0.08+0.04+0.005+0.025=0.15 (d).

0.15*1000=150 (mg).

Home " Medicines » 0 3 g how much will be in milligrams. How many milligrams in a gram and why you need to know.

Usually, volume and length measures are of interest to those who study the elementary laws of physics or, where it is required to convert one unit of measurement to another. Consider an important issue in physics - the system for converting milligrams to milliliters and vice versa.

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Definition of concepts

In accordance with the international translation classification, a milligram is understood as 1/1000 of a gram or 1/1000,000 fraction of a kilogram.

It is a fractional unit of mass and cannot be the full equivalent of a milliliter due to the different volume and density of the substance. In international standardization, it is designated as "mg", while in Russia the abbreviation "mg" is accepted.

100 mg is 1/10 of a gram, but when applied to water, almost ten thousand times less than one liter. This fact is important to take into account when using the international system for transferring from one unit of weight to another, but it is best to use special school cards. They allow you to repeat the translation table in time.

Translation rules

From the course of physics, we know that the correct translation from one unit of measurement to another is possible only thanks to such a concept as the density of matter. This also applies to the features of the conversion of mg to ml.

Practice shows that 1 mg is equal to one cubic centimeter. But the weight of liquid substances cannot be completely compared with the weight of solid substances. For example, the volume of a liquid depends on the density of the substance itself in the liquid state.

Density varies greatly depending on the material used for analysis. All data for translation can be found in the standard tabular function, which is available in any school physics textbook.

To accurately translate (determining 5 ml is how many grams), you must follow the following steps:

Keep in mind that a milliliter does not always correspond to a milligram, the only exception is water, and then approximately.
A gram divided by a cubic centimeter must be converted to a milligram, divided by millimeter cubed.
Keep in mind that some liquids can be much heavier than ordinary water, such as mercury and some other liquids.

If you want to know how many milligrams are in a milliliter of a certain liquid, such as water.

Above, we said that the weight of water is comparable to the weight of a solid, which is explained by the density values. 1 ml of water is equal to a thousandth of one liter, just like 1 milligram is only a thousandth of a gram.

The density of pure water is 0.997 kg per cubic meter. In order to answer the question of how to convert milligrams to milliliters, they resort to the standard conversion system for units of measurement that they study in high school.

To know how much mg is contained in ml, it is important to understand the ratio of tabular parameters and strictly adhere to all data.

Important! Accounting for values in ml or mg is necessary to determine and calculate the dose of the drug. In case of violation of the established normative indicators, the probability of harm to the health of the patient is high.

The table shows the main indicators of medical values when converting from one unit to another

From the table above, it becomes clear and understandable that the weight of a liquid and a dense substance does not always match. This is due to the different density and volume of the substance, which must be converted to milliliters.

Advice! When calculating and converting one unit of measure, it is advisable to follow strict tabular values. This will help to avoid many problems with solving a physical or chemical problem.

What is more - a milligram or a milliliter- Now you know. It is easy to understand that one liter is not always equal to a kilogram, even if you do not neglect some other physical indicators.

Using the calculator

Today, it is not necessary to use hand tools to accurately calculate quantities. It is best to use a counting machine. Automatic calculation makes it possible to find out how many mg are in a milliliter of water, since a milligram and a milliliter of water are different values.

The difference is often fatal. That is why using a calculator makes it possible get rid of many problems. This position has been proven by leading scientists and ordinary schoolchildren.

It is necessary to determine what 1 gram of mercury is equal to. Not every student knows that mercury is the heaviest liquid.

The difference with gasoline exceeds 19 integer indicators. The metric table makes this clear.

The drug is transported to the diseased organ in different ways. Sometimes in the form of a powerful volley - injections, and sometimes - indirectly, if, for example, the medicine is used orally ("per" - "through" + "or" - "mouth"). Be that as it may, the effectiveness of treatment and the likelihood of side effects largely depend on the dose administered.

A LITTLE ABOUT TERMS
The dose (concentration of the active substance) is most often indicated in grams or fractions of a gram (milligrams, micrograms, etc.).

single dose is the amount of substance per dose.
Daily dose- the amount of substance to be taken per day.
Therapeutic dose- the amount of a substance that causes a therapeutic effect.

Distinguish highest single dose(WFD for short) and highest daily dose(abbreviated VVD) - that is, such an amount of a substance, the intake of which will not cause serious consequences.

They distinguish, moreover, maximum (highest), minimum or average therapeutic dose:
one that is below the minimum will not have a therapeutic effect;
the one that exceeds the maximum is no longer a medicine, but a poison that has a strong toxic effect on the body, on its tissues and organs.

Heading dose- the dose of the drug for the course of treatment. This is especially true for antibiotics.

GENDER AND AGE MATTER
Often, single and daily doses are indicated not by one number, but by some kind of limit.
Example:
... take 50-70 mg per dose. The daily dose is 100-200 mg.
In this case, the minimum and highest therapeutic doses are indicated, or rather, their average values.

When prescribing a medicine, the doctor takes into account various factors:
sex and weight of the patient;
patient's age;
the severity of the disease;
interaction of the drug with other medications taken, etc.
So, for example, due to the nature of metabolism, men require larger doses than women, but adolescents and the elderly need smaller doses than in adulthood. People who are below average weight need a lower dose than people who are overweight. Etc.

The dose for children is usually prescribed in 2 ways:
by age (with the wording: take up to 2 months or up to 1 year, etc.);
by weight (the amount of the drug per 1 kg of body weight is indicated - in mg / kg or mcg / kg).
Please note that the most accurate dosage calculation for both children and adults is relative to body weight!

Example:
let's say the doctor prescribed to give medicine to the child several times a day; single dose - 2-3mg/kg.
If a child weighs 10 kg, then 20-30 mg of the active substance is needed for 1 dose.

Approximate calculation of dosages for children:
there is a table of approximate calculation of dosages for children relative to the adult dose. However, these calculations do not apply to potent drugs, the dosages of which are calculated in a more complicated way!

Please note: for children, it is better to use children's drugs.!
Firstly, it is difficult to ensure the accuracy of the dosage of the medicinal substance when dividing the tablet into several parts (even if the active substance is evenly distributed throughout the volume of the tablet, it is very difficult to accurately divide it into equal parts).
Secondly, for children's drugs, the requirements for tablet components (both medicinal and auxiliary) are much higher.

LIQUID VOLUME
1 teaspoon = 5 ml
1 dessert spoon = 2 teaspoons = 10 ml
1 tablespoon = 3 teaspoons = 15 ml
faceted glass = 200 ml
per 200 ml = 16 tablespoons = 20 dessert spoons = 40 teaspoons.

For accurate and accurate dosing of drugs, it is best, of course, to use devices that act as a medical dispenser. These are measuring cups, dosing spoons, dosing pipettes - for dosed intake of liquid and powdered medicines. As a rule, they allow you to dose drugs in the range from 2.5 to 60 ml and are quite acceptable for use at home.

It is clear that these devices are designed only for enteral routes the introduction of dosage forms, that is, entering the body directly through the digestive tract (most often orally - through the mouth). In all other cases (mainly in medical institutions), more complex dosing systems are used that allow you to control the dose and rate of drug administration, the duration of the effect, while facilitating the work of medical personnel and increasing the overall safety of the procedure, etc. These can be syringe dispensers for the continuous administration of drugs or the most advanced microchip implants to date.

HOW MUCH MEDICINE IS IN THE TINCTURE OR SOLUTION?
For liquid dosage forms, the dosage is often indicated as 1 teaspoon (5 ml).
Example:
the doctor prescribed to take the medicine in the form of a syrup or suspension.
On the package or in the annotation it is indicated - 15 mg / 5 ml. This means that 1 teaspoon contains 15 mg of the drug.
Accordingly, if you are prescribed a single dose of 30 mg, then for 1 dose you should take 2 teaspoons of syrup.

Often in liquid dosage forms, the content of the drug is indicated throughout the solution or syrup.
Example:
the annotation states that the vial contains 80 mg of the active substance, and the packaging is 160 ml.
In this case, the drug is recommended to take 1 teaspoon 2 times a day.
We are engaged in calculating the dose in 1 ml:
for this, the dose of the substance in the entire volume must be divided by the entire volume of the liquid. That is: 80 mg / 160 ml = 0.5 mg in 1 ml.
Knowing that a teaspoon holds 5 ml, we multiply the result by 5. That is: 0.5 X 5 mg \u003d 2.5 mg.
Therefore, 1 teaspoon (single dose) contains 2.5 mg of active ingredient.

Sometimes the dose of the active substance is indicated relative to 100 ml or 100 mg. The calculations in this case are similar to the previous ones.
How to count if the dose is given per 100 g of liquid?
Example:
the annotation states that 100 g of the finished solution contains 40 mg of the active substance.
We take into account that 100 g is 20 teaspoons of 5 ml.
Now let's do the math:
the indicated dose of the substance (40 mg) divided by 20. That is: 40 mg / 20 = 2 mg.
Therefore, the dose of the drug in 1 teaspoon of the finished solution is 2 mg.

STRICTLY ON THE RECIPE
The rapid recovery of the patient depends on the competent use of drugs. Therefore, it is so important to strictly adhere to the indicated doses, the time of admission - on an empty stomach or after a meal. For persuasiveness - a few more calculations.

Example:
the annotation of the drug indicates that 1 tablet contains 30 g of the active substance. Heading dose - 800-900 g
The prescription says: take 1 tablet 3 times a day (for) 7 days.
Now we consider: 30 g x 3 times = 90 g per day, or 90 g x 7 days = 630 g per course of treatment.
Therefore, the recipe is under-dosed. Be sure to ask your doctor why you should stick to this dosage!

WHAT TO DO IN OVERDOSE?
Dizziness, headache, nausea, vomiting, weakness, staggering gait are all the most noticeable symptoms of an overdose.
Adults need to urgently wash the stomach and induce vomiting, drink strong tea (in no case should you drink milk!) And be sure to call a doctor. If acute drug poisoning is suspected, urgent hospitalization of the victim is necessary, especially if the child is injured!