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Formulation and Bioequivalence of Two Valsartan/Amlodipine Immediate Release Tablets after a Single Oral Administration

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Tue, 2014-08-05 12:37 — Saed Khammash
Journal Title, Volume, Page: 
Pak J Pharm Sci. 2014 Jul;27(4):755-62
Year of Publication: 
2014
Link: 
http://www.ncbi.nlm.nih.gov/pubmed/25015436
Authors: 
Zaid AN
Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
Natur S
Pharmacare Ltd. Beitunia- P.O. Box 677. Ramallah, Palestine
Qaddomi A
Pharmacare Ltd. Beitunia- P.O. Box 677. Ramallah, Palestine
Abualhasan M
Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
Al-Ramahi R
Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
Shraim N
Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
Khammash S
Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
[email protected]
Jaradat N
Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original): 

The aim of this study was to formulate a film-coated Valsartan/Amlodipine (VS/AM) immediate release tablets and to evaluate their in vivo release profile. VS/AM core tablets were manufactured using dry granulation method. Opadry aqueous coating dispersion was used as film coating material. Dissolution of the film coated tablets was tested in 900 ml of 0.5% SLS media, bioequivalence of tablets was tested by comparisons against the reference brand product. The ICH guidelines were used to evaluate the stability of the obtained tablets. The coated tablets were subjected to gastric pH, and drug release was analyzed using HPLC system to evaluate the efficiency of the film coat. The coated tablets had no defects. VS/AM release met the FDA guidelines for bioequivalence studies. Statistical comparison of the main pharmacokinetic parameters showed no significant difference between test and reference. These findings suggest that aqueous film coating with Opadry system is an easy and economical approach for preparing stable film coated VS/AM tablets without compromising their in vivo drugs release.