Cleocin is an anti biotic capsule produced by Pfizer which helps in the killing of bacteria in all parts of the body. It kills the bacteria which may cause serious infection in the body. It stops the growth of the bacteria in the body itself. The capsule is more useful in treating respiratory disorders, septicaemia and peritonitis. The capsule will not work on common problems such as cold, cough and fever. It is also used in treating painful acne. Though, the capsule is not addictive, you may suffer from an overdose if you take too many pills. You may suffer from heartburn, stomach cramps and nausea if you undergo an overdose. The pills are only available through a doctor's prescription.