Please consult your physician before taking any medication. Biaxin Generic 500mg 10 Tabs - clarithromycin Generic Name: clarithromycin (kla rith roe MYE sin) Brand Names: Biaxin, Biaxin XL What is clarithromycin? Clarithromycin is in a group of drugs called macrolide antibiotics. Clarithromycin fights bacteria in your body. Clarithromycin is used to treat many different types of bacterial infections affecting the skin and respiratory system. Clarithromycin is also used together with other medicines to treat stomach ulcers caused by Helicobacter pylori. Clarithromycin may also be used for purposes other than those listed in this medication guide.