Azathioprine

Category: pharmacological

Aliases: Imuran

Pharmacological Mechanism

Prodrug of 6-mercaptopurine — incorporated into DNA as thioguanine nucleotides causing immunosuppression. TPMT polymorphism (~10% intermediate, ~0.3% deficient) drives marked toxicity variability — pre-treatment TPMT/NUDT15 genotyping standard. IBD + autoimmune + steroid-sparing transplant maintenance.

Half-Life (t½)

PO: 5h

Dosing Guidelines

Target Organ Systems