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J Adv Pharm Technol Res. 2010 Apr;1(2):199-206.

Formulation and evaluation of s-(-)-amlodipine besylate and nebivolol hydrochloride tablets.

Journal of advanced pharmaceutical technology & research

S A Shaikh, S S Shaikh, S R Shahi, M A Shookur, L K Reddy, A N Padalkar, Mahesh Thube

Affiliations

  1. Jeevanjyoti Pharmaceutical, Aurangabad, Maharastra, India.

PMID: 22247846 PMCID: PMC3255425

Abstract

The objective of the present study was to develop a tablet formulation of S-(-)-amlodipine besylate chiral separation drug and nebivolol hydrochloride for better management of hypertension, while reducing or avoiding undesirable adverse effects, which are often associated with administration of a racemic mixture of amlodipine. The composition containing the optically pure S-(-)- isomer of amlodipine 2.5 mg has calcium channel blocking activity and, nebivolol hydrochloride 5 mg has beta-receptor blocking activity.The study was also carried out to design a suitable dissolution medium for S-(-) - amlodipine besylate and nebivolol hydrochloride. Amlodipine besylate and nebivolol hydrochloride had maximum solubility in pH 1.2 and thus pH 1.2 was selected as the most suitable media for S-(-) - amlodipine besylate and nebivolol hydrochloride dissolution studies. The RSD below 2% indicated insignificant batch-to-batch variation. The accelerated stability study of the optimized formulation was performed as the ICH guidelines. The results indicated no change in optical rotation of S-(-) - amlodipine besylate. Hence, combination of two drugs can be formulated into the tablet by wet granulation technique having satisfactory release profile.

Keywords: S-(-) - amlodipine besylate; Tablet; combination therapy; dissolution; nebivolol hydrochloride; wet granulation

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