What is Oral Dutasteride / Finasteride?Updated 17 hours ago
Quick answer
Oral Dutasteride and Oral Finasteride are prescription pills that reduce DHT, the hormone driving pattern hair loss. Finasteride blocks one form of the 5-alpha reductase enzyme and reduces serum DHT by ~70%. Dutasteride blocks both forms and reduces serum DHT by ~90%. Both are available through the Adegen telehealth flow at low daily doses and have decades of clinical use behind them.
How They Work
Pattern hair loss is driven by DHT binding to androgen receptors at the hair follicle. That binding restricts blood flow at the follicle and gradually triggers miniaturization, the slow weakening of the hair shaft over multiple growth cycles.
Finasteride and dutasteride both work upstream of that process. They inhibit the enzyme (5-alpha reductase) that converts testosterone into DHT. Less DHT in your bloodstream means less DHT at the follicle.
Oral Finasteride 1mg
- Inhibits the type II form of 5-alpha reductase
- Reduces serum DHT by ~70%
- Standard daily dose for hair loss
- Best for: pattern hair loss with moderate progression, or as a first-line oral DHT blocker
What the data says: The largest independent long-term trial (PCPT) tracked 17,313 men for seven years at five times the standard hair-loss dose. The drop in sexual function scores was 3.21 points at six months on a 100-point scale, shrinking to 2.11 by year seven: less impact over seven years than three years of normal aging. By year 5 of treatment, reported side-effect rates fall to ≤0.3%.
Oral Dutasteride 0.5mg
- Inhibits both type I and type II forms of 5-alpha reductase
- Reduces serum DHT by ~90%
- Standard daily dose for hair loss (used off-label, originally approved for benign prostatic hyperplasia)
- Best for: advanced or rapidly progressing loss, or for people who didn't get the response they wanted from finasteride
What the data says: A meta-analysis of 15 randomized controlled trials found dutasteride's sexual dysfunction risk was not statistically significant. Real-world surveillance of more than 700 men taking dutasteride for hair loss found decreased libido in 1.3% and impotence in 1.0%.
Realistic Expectations
- Shedding reduction typically starts at 8–12 weeks
- Density changes generally start to become visible at 90+ days
- Full benefit accumulates over 6–12 months
- Effects continue as long as you continue treatment; stopping reverses the benefit over time
Side Effect Profile
The honest version, not the fear version. Adegen's stance is education-first, and we believe you deserve real numbers:
- The absolute difference in sexual side effects over placebo in the largest controlled trials is ~1.7 percentage points
- A 2.2M-patient meta-analysis (European Urology Focus) found no statistically significant link between finasteride and depression or suicide
- The "nocebo effect" is well-documented: in one randomized trial, the informed group reported sexual side effects at 43.6% while the uninformed group reported them at 15.3% on the same drug at the same dose
For peace of mind, Adegen offers Oral Tadalafil 5mg as a protective option that supports blood flow and counters the theoretical mechanism behind any DHT-blocker-related concerns. See our guide on how Tadalafil helps with DHT blocker side effects.
Pricing
- Oral Finasteride 1mg: $29/mo flexible, or $69 every 90 days ($23/mo equivalent, save $18)
- Oral Dutasteride 0.5mg: $49/mo flexible, or $99 every 90 days ($33/mo equivalent, save $48)
Who They're Not For
- Women who are pregnant, trying to conceive, or of childbearing potential (in most cases)
- People with certain medical conditions your telehealth physician will screen for
Next steps
- For a personalized recommendation, take the HairIQ™ assessment.
- For medical questions specific to your situation, please connect with your Adegen provider and we'll route you.