Clarithromycin (clarithromycin systemic) is a member of the drug classmacrolides and is used to treat Bacterial Endocarditis Prevention, Bronchitis,Dental Abscess, Follicular Lymphoma, Helicobacter Pylori Infection, Legionella Pneumonia, Mycobacterium avium-intracellulare - Prophylaxis, Mycobacterium avium-intracellulare - Treatment, Mycoplasma Pneumonia, Nongonococcal Urethritis, Otitis Media, Pertussis, Pertussis Prophylaxis, Pharyngitis,Pneumonia, Sinusitis, Skin and Structure Infection, Skin or Soft Tissue Infection,Strep Throat, Tonsillitis/Pharyngitis, Toxoplasmosis and Upper Respiratory Tract Infection.