antibiotics: how to use
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When used correctly…
When used correctly, antibiotics are extremely useful and important medicines.
They fight certain infections and diseases caused by bacteria.
Well-known antibiotics are penicillin, tetracycline, erythromycin, cotrimoxazole, and ciprofloxacin.
**The different antibiotics work in different ways against specific infections.
All antibiotics have dangers in their use, but some are far more dangerous than others.
Take great care in choosing and using antibiotics.**
There are many kinds of antibiotics, and each kind is sold under several ‘brand names’.
This can be confusing.
However, the most important antibiotics fall into a few major groups:
PENICILLINS
generic name: penicillin, ampicillin, amoxicillin
examples of brands: Pen-V-K
MACROLIDES
generic name: erythromycin
examples of brands: Erythrocin
TETRACYCLINES
generic name: tetracycline, doxycycline
examples of brands: Terramycin
CHLORAMPHENICOL
examples of brands: Chloromycetin
SULFAS SULFONAMIDES
generic name: cotrimoxazole, sulfisoxazole
examples of brands: Bactrim, Gantrisin
AMINOGLYCOSIDES
generic name: gentamicin
examples of brands: Garamycin
CEPHALOSPORINS
generic name: ceftriaxone, cephalexin
examples of brands: Keflex
QUINOLONES
generic name: ciprofloxacin
examples of brands: Cipro
If you have a brand-name antibiotic and do not know to which group it belongs, read the fine print on the bottle or box.
For example, if you have some Paraxin ‘S’ but do not know what is in it, read the fine print.
It says ‘chloramphenicol’.
Look up chloramphenicol in the GREEN PAGES (page 356).
You will find it must be used only for a few very serious illnesses, like typhoid, and is especially dangerous when given to the newborn.
Never use an antibiotic unless you know to what group it belongs, what diseases it fights, and the precautions you must take to use it safely.
Information on the uses, dosage, risks, and precautions for the antibiotics recommended in this book can be found in the GREEN PAGES.
Look for the name of medicine in the alphabetical list at the beginning of those pages.
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GUIDELINES FOR THE USE OF ALL ANTIBIOTICS
If you do not know exactly how to use the antibiotic and what infections it can be used for, do not use it.
Use only an antibiotic that is recommended for the infection you wish to treat.
(Look for the illness in this book.)
Know the risks in using the antibiotic and take all the recommended precautions (see the GREEN PAGES).
Use the antibiotic only in the recommended does, no more, no less.
The dose depends on the illness and the age or weight of the sick person.
Never use injections of antibiotics if taking them by mouth is likely to work as well.
Inject only when absolutely necessary.
Antibiotics must be given for their full course.
Stopping before you have finished all the days of treatment, even if you feel better, can make the infection return in a form that is even harder to cure.
(Some illnesses, like tuberculosis and leprosy, need to be treated for many months or years after the person feels better.
Follow the instructions for each illness.)
If the antibiotic causes a skin rash, itching, difficult breathing, or any serious reactions, the person must stop using it and never use it again (see page 70).
Only use antibiotics when the need is great.
When antibiotics are used too much they begin not to work as well.
GUIDELINES FOR THE USE OF CERTAIN ANTIBIOTICS
Before you inject penicillin or ampicillin, always have ready ampules of Adrenalin (epinephrine) to control an allergic reaction if one occurs (page 70).
For persons who are allergic to penicillin, use another antibiotic such as erythromycin or cotrimoxazole (see page 354 and page 357).
Do not use tetracycline, ampicillin, or another broad spectrum antibiotic for an illness that can probably be controlled with penicillin or another narrow spectrum antibiotic (see page 58).
Broad spectrum antibiotics attack many more kinds of bacteria than narrow spectrum antibiotics.
Use chloramphenicol only for certain severe or life-threatening illnesses, such as typhoid, when no other effective medicine is available.
It is a dangerous drug.
Never use it for mild illness (see page 313).
Do not give tetracycline to pregnant women or to children under 8 years old.
It can damage new teeth and bones (see page 355).
Use streptomycin only for tuberculosis, and always together with other anti-tuberculosis medicines (see page 361).
All medicines in the aminoglycoside group (including kanamycin and gentamicin) are quite toxic (poisonous).
Too often they are prescribed for mild infections where they may do more harm than good.
Use only for certain very serious infections for which these medicines are recommended.
Eating yogurt or curdled milk helps to replace necessary bacteria killed by antibiotics like ampicillin and to return the body’s natural balance to normal (see next page).
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WHAT TO DO IF AN ANTIBIOTIC DOES NOT SEEM TO HELP
For most common infections antibiotics begin to bring improvement in a day or two.
If the antibiotic you are using does not seem to help, it is possible that:
The illness is not what you think.
You may be using the wrong medicine.
Try to find out more exactly what the illness is, and use the right medicine.
The dose of the antibiotic is not correct.
Check it.
The bacteria have become resistant to this antibiotic (they no longer are harmed by it).
Try another one of the antibiotics recommended for that illness.
You may not know enough to cure the illness.
Get medical help, especially if the condition is serious or getting worse.
**Antibiotics do no good for the common cold.
Use antibiotics only for infections they are known to help.**
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IMPORTANCE OF LIMITED USE OF ANTIBIOTICS
The use of all medicines should be limited.
But this is especially true of antibiotics, for the following reasons:
1.
Poisoning and reactions
Antibiotics not only kill bacteria, they can also harm the body, either by poisoning it or by causing allergic reactions.
Many people die each year because they take antibiotics they do not need.
2.
Upsetting the natural balance
Not all bacteria in the body are harmful.
Some are necessary for the body to function normally.
Antibiotics often kill the good bacteria along with the harmful ones.
Babies who are given antibiotics sometimes develop fungus or yeast infections of the mouth (thrush, page 232) or skin (moniliasis, page 242).
This is because the antibiotics kill the bacteria that help keep fungus under control.
For similar reasons, persons who take ampicillin and other broad-spectrum antibiotics for several days may develop diarrhea.
Antibiotics may kill some kinds of bacteria necessary for digestion, upsetting the natural balance of bacteria in the gut.
3.
Resistance to treatment
In the long run, the most important reason the use of antibiotics should be limited, is that WHEN ANTIBIOTICS ARE USED TOO MUCH, THEY BECOME LESS EFFECTIVE.
When attacked many times by the same antibiotic, bacteria become stronger and are no longer killed by it.
They become resistant to the antibiotic.
For this reason, certain dangerous diseases like typhoid are becoming more difficult to treat than they were a few years ago.
In some places typhoid has become resistant to chloramphenicol, normally the best medicine for treating it.
Chloramphenicol has been used far too much for minor infections, infections for which other antibiotics would be safer and work as well, or for which no antibiotic at all is needed.
Throughout the world important diseases are becoming resistant to antibiotics, largely because antibiotics are used too much for minor infections.
If antibiotics are to continue to save lives, their use must be much more limited than it is at present. This will depend on their wise use by doctors, health workers, and the people themselves.
For most minor infections antibiotics are not needed and should not be used.
Minor skin infections can usually be successfully treated with mild soap and water, or hot soaks, and perhaps painting them with gentian violet (page 370).
Minor respiratory infections are best treated by drinking lots of liquids, eating good food, and getting plenty of rest.
For most diarrheas, antibiotics are not necessary and may even be harmful. What is most important is to drink lots of liquids (page 155), and provide enough food as soon as the child will eat.
Do not use antibiotics for infections the body can fight successfully by itself.
Save them for when they are most needed.
For more information on learning to use antibiotics sensibly, see [Helping Health Workers Learn](#addresses-for-teaching-materials), Chapter 19.