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Vardenafil dihydrochloride.

Abdelkader E Ashour1, A F M Motiur Rahman2, Mohammed G Kassem2

  • 1Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.

Profiles of Drug Substances, Excipients, and Related Methodology
|May 6, 2014
PubMed
Summary
This summary is machine-generated.

Vardenafil (VAR) is a potent phosphodiesterase-5 inhibitor used for erectile dysfunction. This review details its synthesis, analytical characterization, and pharmacokinetic properties, highlighting its efficacy and safety.

Keywords:
AnalysisImpotencePDE-5 inhibitorsPharmacokineticsSafetySynthesisVardenafil

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Area of Science:

  • Medicinal Chemistry
  • Pharmacology
  • Analytical Chemistry

Background:

  • Vardenafil (VAR) is a selective phosphodiesterase-5 inhibitor.
  • It is clinically used for erectile dysfunction in various patient groups.
  • Understanding its synthesis and properties is crucial for its application.

Purpose of the Study:

  • To review various synthesis methods for Vardenafil.
  • To describe analytical techniques for Vardenafil characterization and determination.
  • To outline the pharmacokinetic profile and safety of Vardenafil.

Main Methods:

  • Spectroscopic analysis (UV, IR, NMR) for Vardenafil characterization.
  • Mass spectrometry for molecular weight and fragmentation studies.
  • Review of published data on Vardenafil synthesis and pharmacokinetics.

Main Results:

  • Vardenafil exhibits characteristic spectral data (UV λmax ~270nm, IR peaks, NMR CO at 162.44ppm).
  • Molecular mass confirmed at m/z=488.9.
  • Pharmacokinetics show rapid absorption, slow metabolism by CYP3A4, 15% bioavailability, and a 4-5h half-life for Vardenafil and its active metabolite M1.

Conclusions:

  • Vardenafil has well-defined physicochemical properties and analytical profiles.
  • Its pharmacokinetic properties support its efficacy in treating erectile dysfunction.
  • Vardenafil demonstrates a favorable safety profile with generally mild side effects.