Tetracycline- Uses,Dosages,Form,Risks And Precautions


Tetracycline- Uses,Dosages,Form,Risks And Precautions.

Tetracycline are broad-spectrum antibiotics that fights a wide range of different kinds of bacteria. It should be taken by mouth because it works well and causes fewer problems than when it is injected.

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Tetracycline (tetracycline HCL, oxytetracycline, terramycin). Tetracycline often comes in capsules of 250 mg, mixture 125 mg/5 ml.



Tetracycline can be used for the following :

  • Diarrhea or dysentery caused by bacteria or amebas.
  • Sinusitis
  • Respiratory infections (bronchitis etc).
  • Infections of the urinary tract.
  • Typhus
  • Brucellosis
  • Cholera
  • Trachoma
  • Gallbladder infections.
  • Chlamydia
  • Gonorrhea
  • Pelvic inflammatory disease.
  • Chloroquine-resistant malaria.



  • Pregnant women should not take tetracycline as it can damage or stain the baby’s teeth and bones. For the same reason, children under 8 years old should take tetracycline only when it is absolutely necessary, and for short periods only. Use erythromycin instead.
  • Tetracycline may cause diarrhea or upset stomach especially if taken for a long time.
  • It is dangerous to use tetracycline that is old or has passed the expiration date.
  • For the body to make the best use of tetracycline, milk or antacids should not be taken within 1 hour before or after taking the medicine.
  • Some people may develop a skin rash after spending time in the sun while taking tetracycline.



20 to 40 mg/kg/day: capsules of 250 mg and mixture of 125 mg in 5 ml.

Give tetracycline by mouth 4 times a day. In each of the dose, make sure you follow the fllowing below:

  • Adult : 250 mg (1 capsule).
  • Children between 8 to 12 years : 125 mg (½ capsule or 1 teaspoon).
  • Children under 8 years : As a general rule, do not use tetracycline instead use co-trimoxazole or erythromycin.
  • If there is no choice, give children between 4 to 7 years : 80 mg (½ capsule or 2/3 teaspoon).
  • Children between 1 to 3 years : 60 mg (¼ capsule or ½ teaspoon).
  • Babies under 1 year : 25 mg (1/10 capsule or 1/5 teaspoon).
  • Newborn babies : (when other antibiotics are not available): 8 mg (½ capsule or drops of the mixture).

In severe cases and for infections like gonorrhea, chlamydia, pelvic inflammatory disease, cholera, typhus and brucellosis. Twice the above dose should be given except to small children.

For most infections, tetracycline should be continued for 1 or 2 days after the signs of infection are gone ( usually 7 days altogether). For some illnesses, longer treatment is needed :

  • Typhus 6 to 10 days is required.
  • Brucellosis 2 to 3 weeks is required.
  • Cholera 3 to 5 days.
  • Gonorrhea and chlamydia 7 to 10 days.
  • Pelvic inflammatory disease 10 to 14 days.



Doxycycline is also known as vibramycin, it often comes in capsules of tablets of 100 mg and ampules with 100 mg for injection.

Doxycycline is an expensive form of tetracycline that is taken twice a day instead of 4 times a day. When available, it can be used for the same illnesses as tetracycline. Doxycycline can be taken with food or milk. The risks and precautions are the same as for tetracycline.



Tablets of 100 mg ; Give doxycycline by mouth twice a day, in each dose, give:

  • Adults : 100 mg (1 tablet).
  • Children between 8 to 12 years : 50 mg (½ tablet).
  • Children under 8 years old : do not use doxycycline.



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