Antibiotics

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Antibiotics

Antibiotics are substances that selectively suppress the activity of microorganisms. Under the selective effect we understand the activity aimed against microorganisms while maintaining the viability of the patient's cells, and the action is directed not to all of them but to certain species of microorganisms.

Traditionally, antimicrobials are divided into natural (properly antibiotics such as penicillin), semisynthetic (products of modified natural molecules, such as amoxicillin or cefazolin) and synthetic (eg, sulfonamides, nitrofurans). However, a number of natural antibiotics are obrained by synthesis (chloramphenicol) and some medicines called antibiotics (fluoroquinolones) de facto are synthetic compounds.

The major groups of antibiotics include:

  • Beta-lactam antibiotics (penicillins and cephalosporins with a similar chemical structure)
  • Macrolides (erythromycin, azithromycin, roxithromycin)
  • Tetracyclines (tetracycline, doxycycline, oxytetracycline, metacycline)
  • Aminoglycosides that have a very broad s[ectrum of action, including tuberculosis pathogen.
  • Laevomycetin, or chloramphenicol
  • Antifungal antibiotics like Nystatin

Antibiotics should not be taken during a simple cold. A cold is an acute respiratory infection, and antibiotics are powerless against viruses. It has no sense to treat influenza, measles, rubella, chickenpox, mumps, hepatitis A, B, C and many other diseases caused by viruses with antibiotics. Antibiotics do not work on fungi and worms as well.

In recent years there have been several serious studies that proven that antibiotics taken as a prophylactic measure do not save from bacterial complications in ARVI. Moreover, bacterial infections in people not previously treated with antibiotics pass quickly. And those who received antibiotics have to be treated for a long time.

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