Sarpogrelate is widely used to treat peripheral vascular disorders. However, it has been demonstrated to have a poor pharmacokinetic (PK) profile and marked within-subject variability. Here, the bioequivalence of 2 formulations of sarpogrelate (100-mg tablets) was assessed by using the reference-scaled average bioequivalence (RSABE) method, and the PK parameters were quantified in healthy Chinese subjects under fasting (n = 38) and fed (n = 35) conditions. In this open and randomized 4-way replicate study, a single dose of sarpogrelate was administered followed by a 3-day washout period. The sarpogrelate concentration in blood samples was measured by liquid chromatography-tandem mass spectrometry within 6 hours (fasting) or 10 hours (fed) of drug administration, and the PK parameters were determined by a noncompartmental model. The bioequivalence of the 2 formulations under both conditions was assessed using the ratios of ln(peak concentration [Cmax ]) and ln(area under the concentration-time curve [AUC]) within the limits based on the RSABE method. The 90% CIs for the ratios of lnCmax , lnAUC0-t , and lnAUC0-∞ were 0.8531-1.1100, 0.9616-1.0737, and 0.9550-1.0684, respectively, under fasting conditions and 0.8918-1.1076, 0.9818-1.0694, and 0.9818-1.0686, respectively, under fed conditions, which were within the RSABE acceptance limits. Food intake decreased the systemic exposure and the Cmax of sarpogrelate by 0.9-fold and 0.5-fold, respectively.
Keywords: RSABE; bioequivalence; food effect; pharmacokinetics; sarpogrelate.
© 2018, The American College of Clinical Pharmacology.