Sulfadiazine Other names: Sulfanilamidopyrimidine Sulfapyrimidine Sulphadiazine

Chemical formula: C₁₀H₁₀N₄O₂S  Molecular mass: 250.277 g/mol  PubChem compound: 5215

Pharmacodynamic properties

Sulfadiazine is a structural analogue and competitive antagonist of p-aminobenzoic acid preventing bacterial utilisation of PABA in the synthesis of folic acid.

Pharmacokinetic properties

Sulfadiazine is rapidly absorbed from the gastrointestinal tract after oral dosage. Peak blood concentrations are reached within three to six hours, and about 50% is bound to plasma protein.

The serum half-life is about 17 hours, and about 80% of the dose is excreted in the urine within two to three days.

Preclinical safety data

There are no pre-clinical data of relevance to the prescriber that are additional to those included in other sections.

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