Claritek XL 500mg tablet is an antibiotic medication containing the active ingredient Clarithromycin. It belongs to the macrolide group of antibiotics and is used to treat various bacterial infections such as respiratory tract infections, skin infections, and ear infections caused by bacteria. Clarithromycin works by inhibiting the growth and spread of bacteria in the body. Claritek XL 500mg tablet is available in a pack size of 1 x 5 tablets.