sulfonamides

Sulfonamides or Sulfa Drug

1. Short-acting

Sulfisoxazole 

Sulfadiazine

2. Intermediate acting 

Sulfamethoxazole

Co-trimoxazole (composed of sulfamethoxazole and trimethoprim

3. Long-acting

Sulfadoxine

Sulfamethoxypyridazine

4. Topical 

Mefenide

Silver sulfadiazine cream

Sulfacetamide 

5. Poorly absorbed

Sulfasalazine