Sulfadiazine description

Sulfadiazine is an oral sulfonamide anti-bacterial agent.

Each tablet, for oral administration, contains 500 mg sulfadiazine. In addition, each tablet contains the following inactive ingredients: croscarmellose sodium, docusate sodium, microcrystalline cellulose, povidone, sodium benzoate, sodium starch glycolate and stearic acid.

Sulfadiazine occurs as a white or slightly yellow powder. It is odorless or nearly so and slowly darkens on exposure to light. It is practically insoluble in water and slightly soluble in alcohol. The chemical name of sulfadiazine is N1-2-pyrimidinylsulfanilamide. The molecular formula is C10H10N4O2S. It has a molecular weight of 250.27. The structural formula is shown below:

Most sulfonamides slowly darken on exposure to light.^[1]

Adapted from the FDA Package Insert.