Evaluation of pharmacokinetics and safety with bioequivalence of Amlodipine in healthy Chinese volunteers: Bioequivalence Study Findings. 2020

Tongtong Wang, and Yannan Wang, and Sisi Lin, and Lu Fang, and Sai Lou, and Di Zhao, and Jingjing Zhu, and Qigang Yang, and Ying Wang
Wangjiangshan Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China.

OBJECTIVE Amlodipine, a main series of L-type calcium channel blockers (CCBs), exerts potent antihypertensive effects. The aim of this trial was to explore the pharmacokinetics (PK) and safety with bioequivalence of orally administered Amlodipine provided by two sponsors in healthy volunteers (HVs). METHODS Two separate randomized, open-label, single-dose, crossover-design studies were conducted: a fasting study (n = 24) and a fed study (n = 24). In each study, HVs were randomized to Fangming Pharmaceutical Group (Test, T) followed by NORVASC® (Reference, R), or vice versa. Each study subject received a 5-mg Amlodipine tablet with a 15-day washout. The plasma concentrations of Amlodipine were measured using a LC-MS/MS method, and PK parameters were determined by noncompartmental model. RESULTS Forty-eight healthy volunteers were enrolled. And overall demographics were as follows: the fasting study: female (n = 16/24), age (18-54 years), weight (47-76 kg), and BMI (19.5-26.0). The fed study: female (n = 16/24), age (20-49 years), weight (45.5-69 kg), and BMI (19.1-25.0). All PK endpoints met the pre-specific criteria for PK equivalence. In fasting subjects, the maximum plasma concentration (Cmax ) was 3.881 ± 0.982 ng/mL at 6 hours (median) of sponsor T, and 4.042 ± 1.147 ng/mL at 6 hours (median) of sponsor R. In fed subjects, Cmax was 3.312 ± 0.789 ng/mL at 6 hours (median) of sponsor T, and 3.392 ± 0.902 ng/mL at 5 hours (median) of sponsor R. Both fasting and fed studies achieved a plausible bioequivalence. CONCLUSIONS Amlodipine is well tolerated and have a favorable safety profile. The observed adverse events were mild (the severity was assessed according to the Common Terminology Criteria for Adverse Events [version CTCAE4.03]) and all of them were recovered without severe sequences. And the bioequivalence is achieved under fasting and fed conditions, supporting the demonstration of biosimilarity.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D005215 Fasting Abstaining from FOOD. Hunger Strike,Hunger Strikes,Strike, Hunger,Strikes, Hunger
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D013607 Tablets Solid dosage forms, of varying weight, size, and shape, which may be molded or compressed, and which contain a medicinal substance in pure or diluted form. (Dorland, 28th ed) Tablet
D013810 Therapeutic Equivalency The relative equivalency in the efficacy of different modes of treatment of a disease, most often used to compare the efficacy of different pharmaceuticals to treat a given disease. Bioequivalence,Clinical Equivalency,Equivalency, Therapeutic,Generic Equivalency,Clinical Equivalencies,Equivalencies, Clinical,Equivalencies, Therapeutic,Equivalency, Clinical,Therapeutic Equivalencies,Bioequivalences,Equivalencies, Generic,Equivalency, Generic,Generic Equivalencies

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