Inducer of 2C19. By vast experience known not to be porphyrinogenic. Several references: safe/authorised.

(To be edited, initial data ST OCT 04) Water soluble platelet inhibitor, administered as tablets 75-500 mg/d. Hydrolyzed to salicylic acid. Excreted in urine. French list: Authorized. Kalman, Bonkowski: Believed to be safe. Moore MR, Hift RJ: Drugs in acute porphyria. Cell Mol Biol 43:89,1997: safe. Eales L: Porphyria and the lifethreatening drugs. S Afr Med J 56:914, 1974: safe. C.Andersson; patient reports: tolerated (n=2)

Uneventful use reported in 92 patients with acute porphyria.