Trials of cilostazol, in contrast, with an average follow up of about months, had just 19 total deaths, 12 on cilostazol, on placebo, for crude rates of. The expected pharmacologic activity, however, based on plasma concentrations and relative PDE III inhibiting potency of parent drug and metabolites, appeared little changed. Short-term days coadministration of aspirin with Pletal increased the inhibition of arachidonic acid-induced ex vivo platelet aggregation by 20 compared to Pletal alone and by 48 compared to aspirin alone. Cilostazol is metabolized extensively by liver isoenzymes, primarily CYP3A4 and, to some degree, CYP2C19, to active metabolites. cilostazol prijs Cilostazol has been studied in people without heart failure, without evidence of harm, but much more data would be needed to determine that there is no risk at all. Cilostazol does not appear to inhibit CYP3A4 see Pharmacokinetic and Pharmacodynamic Drug-Drug Interactions, Lovastatin.