alexa Bioequivalence Study of Simvastatin
ISSN: 1948-593X

Journal of Bioanalysis & Biomedicine
Open Access

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Research Article

Bioequivalence Study of Simvastatin

Selvadurai Muralidharan1, Janaki Sankarachari Krishnan Nagarajan1*, Sachin Singh1, and Anil Dubala1

1Department of Pharmaceutical Analysis, J.S.S.College of Pharmacy, Tamilnadu, India

*Corresponding Author:
Dr. Janaki Sankarachari Krishnan Nagarajan
Center for Advanced Drug Research and Testing
J.S.S.College of pharmacy, Tamilnadu, India
Tel: +91-423-2443393
Fax: +91-423-2442937
E-mail: [email protected]

Received Date: October 05, 2009; Accepted Date: December 24, 2009; Published Date: December 24, 2009

Citation: Muralidharan S, Nagarajan JSK, Singh S, Dubala A (2009) Bioequivalence Study of Simvastatin. J Bioanal Biomed 1: 028-032. doi: 10.4172/1948-593X.1000006

Copyright: © 2009 Muralidharan S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



A simple, rapid and selective method was developed for esti- mation of simvastatin from human plasma. The method involves simple protein precipitation techniques using etofy lline as inter- nal standard. Chromatographic separation was carrie d out on a reversed phase C 18 column using mixture of methanol: 2mM ammonium acetate and 500 μl of 0.5% formic acid (80 :20, v/v) at a flow rate of 1.0 ml/min with UV-VIS detection at 418.35 nm. The retention time of simvastatin and internal standard were 5.41 and 1.086 min, respectively. The method was va lidated and found to be linear in the range of 1.0-10.0 ng/mL. An open, ran- domized, two-treatment, two period, single dose cro ssover, bioequivalence study in 12 fasting, healthy, male, volunteers was conducted. After dosing, serial blood samples were collected for the period of 24 . 0 h . Various pharmacokinetic parameters including AUC 0– t , AUC 0– ∞ , C max , T max , T ½ , and elimination rate constant ( K el ) were determined from plasma concentration of both formulations. Log transformed values were comp ared by nalysis of variance (ANOVA) followed by classical 90% con- fidence interval for C , AUC 0– t and AUC 0– ∞ and was found to be within the range. These results indicated that t he analytical method was linear, precise nd accurate. Test and r eference for- mulation were found to be bioequivalent.


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