African Journal of
Pharmacy and Pharmacology

  • Abbreviation: Afr. J. Pharm. Pharmacol.
  • Language: English
  • ISSN: 1996-0816
  • DOI: 10.5897/AJPP
  • Start Year: 2007
  • Published Articles: 2286

Full Length Research Paper

A new multivariate similarity factor for in vitro therapeutic equivalence assessment

Marcus Augusto Lyrio Traple
  • Marcus Augusto Lyrio Traple
  • Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo. Av. Prof. Lineu Prestes, 580 – Bloco 13 – CEP 05508-000 – Butantã – São Paulo – SP – Brasil.
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Rogério Takao Okamoto
  • Rogério Takao Okamoto
  • Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo. Av. Prof. Lineu Prestes, 580 – Bloco 13 – CEP 05508-000 – Butantã – São Paulo – SP – Brasil.
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Rosa Noriko Yamamoto
  • Rosa Noriko Yamamoto
  • Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo. Av. Prof. Lineu Prestes, 580 – Bloco 13 – CEP 05508-000 – Butantã – São Paulo – SP – Brasil.
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Terezinha de Jesus Andreoli Pinto
  • Terezinha de Jesus Andreoli Pinto
  • Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo. Av. Prof. Lineu Prestes, 580 – Bloco 13 – CEP 05508-000 – Butantã – São Paulo – SP – Brasil.
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Felipe Rebello Lourenço*
  • Felipe Rebello Lourenço*
  • Departamento de Farmácia, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo. Av. Prof. Lineu Prestes, 580 – Bloco 13 – CEP 05508-000 – Butantã – São Paulo – SP – Brasil.
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  •  Accepted: 11 February 2014
  •  Published: 15 February 2014

Abstract

Pharmaceutical equivalence is an important issue in the regulatory approval of generic and similar drug products, particularly for those that will not be tested for bioequivalence. However, there is no scientific approach that provides us an objective measure of quality and similarity of the results obtained for testing (generic or similar) and branding drug products simultaneously. This paper describes a new multivariate similarity factor for the assessment of in vitro therapeutic equivalence between two medicines by using pharmaceutical equivalence study. We performed pharmaceutical equivalence studies for acyclovir cream, metronidazole injection, meropenem for injection and atropine sulfate injection. All tests and assays results were standardized using an appropriate desirability function. Multivariate similarity factors for pharmaceutical studies were calculated based on individual acceptance factors and similarity deviations for brand, generic, and similar drugs. We found a perfect correlation among multivariate similarity factor and regulatory requirements. The multivariate similarity factor is a useful tool for in vitro therapeutic equivalence assessment, and may be used for regulatory approval of generic and similar drugs.

Key words: Therapeutic equivalency, in vitro, multivariate analysis.

Copyright © 2024 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

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