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Bioequivalence evaluation of two brands of enalapril 20mg tablets ( narapril and renitec ) in healthy human volunteers
Author(s) -
Najib Naji M.,
Idkaidek Nasir,
Adel Ayman,
Admour Isra',
Astigarraga Rafel E. B.,
Nucci Gliberto De,
Alam S. Mahmood,
Dham Ruwayda
Publication year - 2003
Publication title -
biopharmaceutics and drug disposition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.419
H-Index - 58
eISSN - 1099-081X
pISSN - 0142-2782
DOI - 10.1002/bdd.368
Subject(s) - bioequivalence , pharmacokinetics , cmax , confidence interval , medicine , human plasma , analysis of variance , active metabolite , pharmacology , enalapril , metabolite , chromatography , chemistry , blood pressure , angiotensin converting enzyme
The bioequivalence of two brands of enalapril 20 mg tablets was demonstrated in 24 healthy human volunteers after a single oral dose in a randomized cross‐over study, conducted at IPRC, Amman, Jordan. Reference (Renitec, MSD, Netherlands) and test (Narapril, Julphar, UAE) products were administered to fasted male volunteers; blood samples were collected at specified time intervals, plasma separated and analysed for enalapril and its active metabolite (enalaprilat) using a validated LC‐MS/MS method at Cartesius Analytical Unit, Institute of Biomedical Sciences, USP, Sao Paulo, Brazil. The pharmacokinetic parameters AUC 0−t , AUC 0−∝ , C max , T max , T 1/2 and elimination rate constant were determined from plasma concentration‐time profile for both formulations and were compared statistically to evaluate bioequivalence between the two brands, using the statistical modules recommended by FDA. The analysis of variance (ANOVA) did not show any significant difference between the two formulations and 90% confidence intervals fell within the acceptable range for bioequivalence. Based on these statistical inferences it was concluded that the two brands exhibited comparable pharmacokinetic profiles and that Julphar's Narapril is bioequivalent to Renitec of MSD, Netherlands. Copyright © 2003 John Wiley & Sons, Ltd.