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Finasteride for hair loss: a review
A K Gupta1,2, M Venkataraman2, M Talukder2
1Department of Medicine, Division of Dermatology, University of Toronto, Toronto, Canada.
The Journal of Dermatological Treatment
|July 22, 2021
Summary
Finasteride 1mg/day effectively increases hair count for male androgenetic alopecia (AGA). While generally well-tolerated, patients must be informed about potential sexual side effects and depression risks.
Area of Science:
- Pharmacology
- Dermatology
- Drug Safety
Background:
- Finasteride 1mg/day is a key treatment for androgen-dependent conditions like male androgenetic alopecia (AGA).
- Understanding finasteride's pharmacodynamics, pharmacokinetics, mechanism of action, and metabolism is crucial for its clinical application.
Purpose of the Study:
- To comprehensively review and analyze the efficacy and safety of finasteride for androgenetic alopecia.
- To assess finasteride's effectiveness using meta-analyses of clinical trial data.
- To describe the adverse event profile and post-marketing reports associated with finasteride use.
Main Methods:
- Literature review and comprehensive summarization of finasteride's properties.
- Pairwise and network meta-analyses of clinical trial data to evaluate efficacy.
- Analysis of adverse events and post-marketing surveillance data, including FAERS database.
Main Results:
- Finasteride 1mg/day significantly increased hair count compared to placebo at 24 and 48 weeks.
- No significant difference in efficacy was observed between finasteride doses (1mg/day, 5mg/day) and topical finasteride.
- Common adverse events include erectile dysfunction and decreased libido; depression risk led to FDA label updates.
Conclusions:
- Finasteride is an effective treatment for male androgenetic alopecia, demonstrating significant hair count increases.
- The efficacy of different finasteride formulations and doses is comparable.
- Patients require thorough education on potential short- and long-term side effects, including sexual dysfunction and depression, associated with finasteride therapy.
