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Finasteride per Alopecia androgenetica

A

Basato su 129 studi (16 meta-analyses, 13 RCTs) con 18,623 partecipanti totali. 106/129 studi mostrano effetti positivi.

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A

In sintesi

Finasteride has very strong evidence supporting its effectiveness for androgenetic alopecia and is considered a well-established first-line option backed by decades of research.

  • 106 out of 129 studies show positive effects — one of the most studied hair loss interventions
  • 16 meta-analyses and 13 RCTs provide a robust evidence base across 18,623 participants
  • Works by reducing DHT, the hormone primarily responsible for pattern hair loss
  • Topical finasteride formulations are being researched as an alternative to oral use

Key Study Findings

Review
Androgenetic Alopecia in Women: A Narrative Review of Pathophysiology, Clinical Evaluation, and Treatments.
Dose: None vs: None Outcome: None Effetto: None None

Popolazione: women with androgenetic alopecia (female pattern hair loss)

non-randomized controlled trial n=60 16 weeks Open-label
Clinical Efficacy and Mechanisms of Microneedling Alone or Combined With Drugs in the Treatment of …
Dose: Mild group: microneedling alone (8 weeks); Moderate group: microneedling + 5% minoxidil (12 weeks); vs: Placebo Effetto: All groups showed significant decrease in HLSS and increase in hair density post-treatment (p<0.001) p<0.001
randomized controlled trial n=45 16 weeks Open-label
Clinical and Trichoscopic Evaluations of Topical Finasteride 1%, Topical Spironolactone 5%, and Minoxidil 5% in …
Dose: Group A: topical finasteride 1% solution; Group B: topical spironolactone 5% solution; Group C: topi vs: Placebo Effetto: Groups A and C showed significant improvement on Sinclair scale and trichoscopic hair density; Group None
Review
Male and female pattern hair loss.
Dose: None vs: Placebo Effetto: None None
randomized controlled trial n=45 Open-label
Clinical efficacy of microneedle combined with 5% Minoxidil solution and finasteride in the treatment of …
Dose: Group A: 5% Minoxidil alone; Group B: 5% Minoxidil + Finasteride; Group C: Microneedling + 5% Minoxi vs: Placebo Effetto: Hair density and hair shaft diameter increased in all groups; Group C superior to Group A in Norwood p<0.01

Key Statistics

206

Studi

24777

Partecipanti

Positive

A

Grado

Referenced Papers

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Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Dosaggi di uso comune

hairloss:
1 mg/day oral

Limite massimo: 5 mg/day (BPH dose)

Dosaggi studiati nella ricerca

Dosaggio Durata Effetto N
None -- Neutral --
None -- Neutral --
Mild group: microneedling alone (8 weeks); Moderate group: microneedling + 5% minoxidil (12 weeks); 16 weeks Positive 60
Group A: topical finasteride 1% solution; Group B: topical spironolactone 5% solution; Group C: topi 16 weeks Positive 45
None -- Positive --
Group A: 5% Minoxidil alone; Group B: 5% Minoxidil + Finasteride; Group C: Microneedling + 5% Minoxi -- Positive 45
None -- Positive --
various across included studies (2015-2024) -- Positive --

Momento migliore per l'assunzione: Once daily at the same time, with or without food

Safety & Side Effects

Effetti collaterali segnalati

  • Decreased libido (2-4% of users)
  • Erectile dysfunction (1-3% of users)
  • Decreased ejaculate volume
  • Breast tenderness or gynecomastia (rare)
  • Depression or mood changes (rare, debated)

Interazioni note

  • No significant drug-drug interactions identified
  • May affect PSA test results (reduces PSA by ~50%)
  • Contraindicated in pregnancy (Category X teratogen)

Livello di assunzione massimo tollerabile: 5 mg/day (BPH dose)

Consultare sempre il proprio medico prima di iniziare qualsiasi integratore.Consultate sempre il vostro medico prima di iniziare qualsiasi integratore.

Frequently Asked Questions

Does Finasteride help with Alopecia androgenetica?
Based on 206 studies with 24,777 participants, there is strong evidence from multiple clinical trials that Finasteride may support Alopecia androgenetica management. Our evidence grade is A (Strong Evidence).
How much Finasteride should I take for Alopecia androgenetica?
Studies have used various dosages. A commonly studied range is 1 mg/day oral. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Finasteride?
Reported side effects may include Decreased libido (2-4% of users), Erectile dysfunction (1-3% of users), Decreased ejaculate volume, Breast tenderness or gynecomastia (rare). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Finasteride and Alopecia androgenetica?
We rate the evidence as Grade A (Strong Evidence). This rating is based on 206 peer-reviewed studies with 24,777 total participants. The overall direction of effect is positive.

Related Evidence

Avvertenza FDA: Queste affermazioni non sono state valutate dalla Food and Drug Administration. I prodotti e le informazioni presenti su questo sito web non sono destinati a diagnosticare, trattare, curare o prevenire alcuna malattia. I gradi di evidenza presentati si basano sulla nostra analisi della ricerca pubblicata e sottoposta a revisione paritaria e non costituiscono consulenza medica. Consultate sempre il vostro medico prima di iniziare qualsiasi regime di integrazione.