Clarithromycin is used to treat bacterial infections affecting the skin and respiratory system. Learn about side effects, interactions and indications. 250 mg PO every 12 hours for 7 to 14 days. Clinical practice guidelines recommend clarithromycin as a monotherapy option in previously healthy outpatients with no risk factors for drug-resistant S. pneumoniae and without therapy in the preceding 3 months. Clarithromycin is the generic form of the brand-name prescription drug Biaxin, an antibiotic used to treat bacterial infections. Effects on the liver, detected by increased levels of blood liver enzymes, have been seen in 1 to 2 percent of patients taking clarithromycin, according to 2014 information from the NLM LiverTox website. Clarithromycin oral tablet (Biaxin) is used to prevent and treat certain bacterial infections. Learn about side effects, warnings, dosage, and more. Prevpac (lansoprazole, amoxicillin and clarithromycin) is a combination of a proton pump inhibitor (PPI), a penicillin antibiotic, and a macrolide antibiotic used to prevent stomach ulcer caused by infection with Helicobacter pylori (H. pylori). Clarithromycin is used to treat certain bacterial infections, such as pneumonia (a lung infection), bronchitis (infection of the tubes leading to the lungs), and infections of the ears, sinuses, skin, and throat. Clarithromycin is a prescription drug used to treat a wide variety of bacterial infections. Learn about side effects, drug interactions, dosages, warnings, and more. Clarithromycin, sold under the brand name Biaxin among others, is an antibiotic used to treat various bacterial infections. This includes strep throat, pneumonia, skin infections, H. pylori infection, and Lyme disease, among others. Clarithromycin can be taken by mouth as a pill or liquid. Learn about the potential side effects of clarithromycin. Includes common and rare side effects information for consumers and healthcare professionals.