Prescription Drugs   Non-Prescription Drugs

Sulfonamides are medicines that prevent the growth of bacteria in the body.


Sulfonamides are used to treat many kinds of infections caused by bacteria and certain other micro-organisms. Physicians may prescribe these drugs to treat urinary tract infections, ear infections, frequent or long-lasting Bronchitis, Bacterial Meningitis, certain eye infections, Pneumocystis Carinii Pneumonia, Traveler's Diarrhea, and a number of other kinds of infections. These drugs will not work for colds, flu, and other infections caused by viruses.


Sulfonamides, also called Sulfa medicines, are available only with a physician's prescription. They are sold in tablet and liquid forms. Some commonly used Sulfonamides are Sulfisoxazole (Gantrisin) and the combination drug Sulfamethoxazole and Trimethoprim (Bactrim, Cotrim).