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Related Experiment Videos

Sildenafil affects olfactory function.

V Gudziol1, M Mück-Weymann, O Seizinger

  • 1Smell and Taste Clinic, Department of Otorhinolaryngology, University of Dresden Medical School, Dresden, Germany.

The Journal of Urology
|December 13, 2006
PubMed
Summary
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Higher doses of sildenafil, a medication for erectile dysfunction, may decrease the sense of smell. This effect was observed at 100 mg but not 50 mg, with no impact from genetic variations.

Area of Science:

  • Pharmacology
  • Neuroscience
  • Otolaryngology

Background:

  • Sildenafil is a widely used oral medication for erectile dysfunction.
  • A common side effect of sildenafil is nasal congestion, affecting approximately 20% of patients.
  • Nasal airflow and olfactory function are closely related.

Purpose of the Study:

  • To investigate the effect of sildenafil on olfactory function in healthy volunteers.
  • To determine if sildenafil dosage impacts olfactory sensitivity.
  • To explore the potential influence of G-protein beta3 subunit C825T polymorphism on sildenafil's effect on smell.

Main Methods:

  • A double-blinded, crossover study involving 20 healthy volunteers.
  • Administration of sildenafil (50 mg and 100 mg) and placebo.

Related Experiment Videos

  • Olfactory function assessed using the standardized 'Sniffin' Sticks' test; genetic genotyping performed.

    • Main Results:

    • Sildenafil at a 100 mg dose, but not 50 mg, significantly affected olfactory function.
    • No significant impact of G-protein beta3 C825T polymorphism (TT, CC, TC genotypes) on olfactory changes was observed.
    • The study identified a dose-dependent effect of sildenafil on olfactory sensitivity.

    Conclusions:

    • Higher doses of sildenafil may lead to reduced olfactory sensitivity.
    • The findings suggest a potential mechanism for the nasal congestion side effect of sildenafil.
    • Further research could explore the clinical implications of altered olfaction in patients using sildenafil.