Sulfadimidine

Sulfadimidine or sulfamethazine is a sulfonamide antibacterial.

There are non-standardized^a abbreviations for it as "sulfadimidine" (abbreviated SDI and more commonly but less reliably^b SDD) and as "sulfamethazine" (abbreviated SMT and more commonly but less reliably^c SMZ). Other names include sulfadimerazine, sulfadimezine, and sulphadimethylpyrimidine.^{[citation needed]}