Azithromycin 250 mg (Generic Zithromax) is a macrolide antibiotic used to treat various types of bacterial infections, including skin infections, sexually transmitted diseases, ear infections and respiratory infections.

Generic Zithromax is an antibiotic used in combination with other drugs as preventive treatment against both toxoplasmosis and MAC. Azithromycin is also used for treating cryptosporidiosis. Maintenance treatment means you keep taking the drug to control an infection so that you don't become ill. Zithromax has good bioavailability, so a single dose can be effective against some infections.

Azithromycin is indicated for acute bacterial sinusitis (ABS) due to Haemophilus influenzae, Moraxella catarrhalis, or Streptococcus pneumoniae in patients appropriate for oral therapy. Azithromycin is also indicated for community-acquired pneumonia (CAP) due to Chlamydophila pneumoniae, Haemophilus influenzae, Mycoplasma pneumoniae, or Streptococcus pneumoniae in patients appropriate for oral therapy.

how does antibiotics work

Azithromycin 250 mg has in many ways revolutionized the treatment of chlamydial infections. Its importance derives from its unusual pharmacokinetic properties. Anti-chlamydial levels of the drug are readily achieved inside cells or tissues, particularly useful for treating intracellular chlamydial infections. Furthermore adequate intracellular levels may be sustained for several days because of the slow efflux of the drug from cells.

To treat toxoplasmosis, azithromycin is used in combination with pyrimethamine at an initial dose of 1000 mg followed by 500 mg per day. Azithromycin used alone has been associated with early relapse. To treat MAC, azithromycin has been studied at 500 mg per day with promising results in individuals taking it for 30 days. Some individuals may develop azithromycin-resistant strains of MAC. To treat chlamydia, azithromycin is given in a single 1000 mg oral dose.


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Azithromycin has a long half-life when compared with many other types of antibiotic, allowing people to take it just once a day - and for far shorter periods of time. When bacteria cannot effectively produce proteins, they become unable to grow and can be fought off much more successfully.

Side effects that are possible when taking azithromycin include insomnia, anxiety, skin rash or mild itching, vaginal discharge or itching and a decreased sense of taste or smell. In addition, some patients report mild nausea, vomiting, stomach pain, constipation or diarrhea and dizziness.

Today there are more than one-hundred antibiotics available for curing minor and life threatening diseases. Macrolide antibiotics are mostly used for treating Streptococcal infections (strep throat), syphilis, respiratory infections and mycoplasmal infections.