Dutasteride for Androgenetic Alopecia
ABased on 99 studies (12 meta-analyses, 7 RCTs) with 19,921 total participants. 68/99 studies show positive effects.
The Bottom Line
Dutasteride has strong scientific support for androgenetic alopecia and research suggests it may be more effective than finasteride, though it should be used under medical supervision due to potential side effects.
- 34 out of 43 studies show positive effects across 12,060 participants
- Multiple meta-analyses consistently support dutasteride's effectiveness for pattern hair loss
- Blocks both type I and type II 5-alpha reductase enzymes, potentially offering broader DHT reduction than finasteride
- Available in both oral and topical formulations, with topical forms being actively researched
Key Study Findings
Population: women with androgenetic alopecia (female pattern hair loss)
Population: Men with androgenetic alopecia
Population: Adult males with androgenetic alopecia
Population: 10 males + 10 postmenopausal females with resistant AGA
Key Statistics
99
Studies
19921
Participants
Positive
Grade
Referenced Papers
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Commonly Used Dosages
- hairloss:
- 0.5 mg/day (off-label)
Upper limit: 0.5 mg/day
Dosages Studied in Research
| Dosage | Duration | Effect | N |
|---|---|---|---|
| None | -- | Neutral | -- |
| 0.2 mg dutasteride daily | 24 weeks | Positive | 139 |
| 3 sessions of dutasteride microinfusion (monthly) | 12 weeks | Positive | 8 |
| 4 monthly sessions of SPi + iontophoresis | 8 weeks | Positive | 20 |
| Dutasteride (oral, various doses) | -- | Positive | -- |
| None | -- | Positive | -- |
| None | -- | Positive | -- |
| None | -- | Positive | -- |
Best taken: Once daily at the same time, with or without food; prescription required
Safety & Side Effects
Reported Side Effects
- ⚠ Decreased libido (more common than finasteride)
- ⚠ Erectile dysfunction
- ⚠ Ejaculation disorders
- ⚠ Gynecomastia (breast tissue growth)
- ⚠ Very long half-life (~5 weeks) means slow side effect resolution
Known Interactions
- ● CYP3A4 inhibitors (ketoconazole, ritonavir) may increase dutasteride levels
- ● May affect PSA levels (reduces by ~50%)
- ● Contraindicated in pregnancy (Category X teratogen)
Tolerable upper intake: 0.5 mg/day
Always consult your healthcare provider before starting any supplement.
Frequently Asked Questions
Does Dutasteride help with Androgenetic Alopecia?
How much Dutasteride should I take for Androgenetic Alopecia?
Are there side effects of Dutasteride?
How strong is the evidence for Dutasteride and Androgenetic Alopecia?
Related Evidence
Other ingredients for Androgenetic Alopecia
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.