Description and Brand Names. Drug information provided by: IBM Micromedex. US Brand Name. Biaxin; Biaxin Filmtab; Biaxin XL; Descriptions. Clarithromycin is used to treat bacterial infections in many different parts of the body. It is also used in combination with other medicines to treat duodenal ulcers caused by H. pylori. This medicine is also used to prevent and treat Mycobacterium avium complex (MAC) infection.. 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.. BRAND NAME (S): Biaxin. It may also be used to prevent certain bacterial infections. Clarithromycin is known as a macrolide antibiotic. It works by stopping the growth of bacteria.This antibiotic treats only bacterial infections. It will not work for viral infections (such as common cold, flu ).. The antibiotic clarithromycin (brand name: Biaxin) may increase the long-term risk of heart problems and death in patients with heart disease, according to U.S. health officials.. Clarithromycin is a white to off-white crystalline powder. It is soluble in acetone, slightly soluble in methanol, ethanol, and acetonitrile, and practically insoluble in water.. Clarithromycin . Brand names/Manufacturer: ADEL (Senosiain - MEXICO) ANZOPAC (UCI - BRAZIL) BIAXIN XL (ABBOTT LABORATORIES) BICLAR (Abbott - BELGIUM).