Bactrim is a combination drug containing two substances, namely sulfamethoxazole, and trimethoprim. It is known for treating different infections caused by bacteria in the ear, urinary tract, respiratory system, or in the intestines. It is also used to cure pneumocystis.
Antibiotics destroy the cell wall of bacteria, thus inhibiting its activities of harming the body. Bactrim performs in the same way and retards the growth of harmful bacteria.