No CYP-interactions. Three references consider it safe.

(To be edited, initial data ST OCT 04) Platelet inhibitor administered as tablets in a dose of 200 mg, Maximal plasma levl is 2.6 ug/mL. In main parts excreted unmetabolized in faeces. Metabolism takes place by conjugation with glucuronic acid. South African list: Use. French list: Authorized. Michael Moore’s list: safe. C.Andersson; patient reports: tolerated (n=1)

Uneventful use reported in 1 patients with acute porphyria.