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Brand Name(s): Bactrim; Septra; Sulfatrim
CAS n║: 723-46-6
(sul fa meth OX a zole)

What is Sulfamethoxazole?

Sulfamethoxazole is a sulfonamide bacteriostatic antibiotic. Sulfonamides (sulfa drugs) are antibiotics used to treat a wide variety of bacterial infections such as urinary tract infections, bronchitis, ear infections (otitis), traveler's diarrhea, and Pneumocystis carinii pneumonia in AIDS or cancer patients.

It is most often used as part of a synergistic combination with trimethoprim in a 5:1 ratio in co-trimoxazole, which is more commonly known by its brand names Bactrim«, Septra« and Sulfatrim«.

Additionally, it can also be used as an alternative to amoxicillin-based antibiotics to treat sinusitis.

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