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  • Title: Bioequivalence study of two perindopril tert-butylamine tablet formulations in healthy Chinese subjects under fasting and fed conditions: A randomized, open-label, single-dose, crossover trial.
    Author: Li Q, Hao Z, Yu Y, Tang Y.
    Journal: Biomed Pharmacother; 2021 Mar; 135():111221. PubMed ID: 33433351.
    Abstract:
    BACKGROUND: To evaluate the bioequivalence between test and reference formulations of perindopril tert-butylamine under fasting and fed conditions and to assess their pharmacokinetic (PK) and safety profiles. METHOD: A randomized, open-label, single-dose, crossover trial was conducted in healthy Chinese subjects. Test or reference perindopril tert-butylamine tablets (4 mg) were randomly given to subjects under fasting (2-period crossover, with an administration sequence of test tablet (T), reference tablet (R) or RT) and fed (4-period crossover, with an administration sequence of TRTR or RTRT) conditions, while each single administration was followed by a 14-day washout period. The plasma concentrations and corresponding non-compartmental PK parameters of perindopril and perindoprilat were determined. The two formulations were considered to be bioequivalent if the 90 % confidence intervals (CIs) of the geometric mean (GM) ratio (test/reference) for Cmax, AUC0-t, and AUC0-∞ (perindopril) was both within the range of 80-125 %. Safety assessments including vital signs, physical examination, laboratory examination, 12-lead ECG and reports of treatment emergent adverse events (TEAEs) were carefully documented. RESULTS: A total of 64 subjects (32 in each trial) were randomized and all completed the trials. Regardless of fasting or fed trials, the PK characteristics of perindopril and perindoprilat for the test formulation were similar to those of the reference formulation (all P > 0.05). The 90 % CIs of the geometric mean (GM) ratio for Cmax, AUC0-t, and AUC0-∞, respectively, were 92.86-106.81 %, 98.44-102.88 % and 98.48-103.02 % under the fasting condition and 90.64-110.04 %, 96.95-101.90 % and 96.83-101.78 % under the fed condition, which were both within the pre-specified range of 80-125 %. A total of 10 (31.3 %) fasted subjects and 11 (34.4 %) fed subjects experienced 11 and 24 TEAEs, respectively, all of which were within the severity of grade 1. The incidence of TEAEs and drug-related TEAEs were similar between test and reference formulations (all P > 0.05) and no serious TEAEs or deaths occurred during the trials. CONCLUSIONS: The test and reference formulations of perindopril tert-butylamine tablets (4 mg) were bioequivalent and well tolerated in healthy Chinese subjects under fasting and fed conditions.
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