Sulfameth-trimeth is a combination of sulfamethoxazole and trimethoprim, two antibiotics, per WebMD. It is useful in treating bacterial infections, such as those in the ears, urinary tract, respiratory system and intestines. It also treats and prevents certain forms of pneumonia.
According to the Mayo Clinic, sulfameth-trimeth is known by various brand names, including Bactrim, Septra and Sulfatrim. The Mayo Clinic notes that sulfameth-trimeth is available as a tablet or as a suspension.
WebMD advises patients to take this medication with a full 8-ounce glass of water and to drink lots of fluids while taking sulfameth-trimeth to minimize the risk of kidney stone formation. In the event of stomach upset, patients can take the medication with food or milk, according to WebMD.