Clarithromycin is an antibiotic used to treat various bacterial infections.
Clarithromycin can be taken by mouth as a pill or liquid.
Clarithromycin is primarily used to treat a number of bacterial infections including pneumonia, Helicobacter pylori and as an alternative to penicillin in strep throat. Other uses include cat scratch disease and other infections due to Bartonella, cryptosporidiosis, as a second line agent in Lyme disease and toxoplasmosis.
It may also be used to prevent bacterial endocarditis in those who cannot take penicillin.
It is effective against upper and lowers respiratory tract infections, skin and soft tissue infections and Helicobacter pylori infections associated with duodenal ulcers.