Finasteride blocks DHT — the hormone that shrinks your hair follicles. 87% of men see improvement. Under $1/day. Here's everything you need to know.
The science is straightforward. Your body converts testosterone to DHT, and DHT shrinks hair follicles. Finasteride blocks that conversion.
In genetically susceptible individuals, DHT (dihydrotestosterone) binds to hair follicles and causes them to shrink over time. This is androgenetic alopecia.
Finasteride inhibits 5-alpha reductase — the enzyme that converts testosterone to DHT. This reduces scalp DHT by approximately 64–70%.
Without DHT attacking your follicles, miniaturization stops. Many follicles recover. 83% of men maintain or improve hair at 2 years.
DHT levels drop within weeks. You may experience temporary shedding — this is normal and often a good sign.
Shedding slows. Hair loss stabilizes. Some early signs of improvement may appear.
Visible improvement for most responders. Thicker hair, better coverage, increased density.
Peak results. Continue treatment to maintain gains. Benefits last as long as you stay on treatment.
We believe in transparency. Here's what clinical trials found — the real numbers, not fear-mongering or minimization.
The most discussed concern. Here's the data from Phase III trials:
The difference is real but small. Most side effects resolve with discontinuation.
Studies show patients informed about potential sexual side effects report them at 3x higher rates than uninformed patients (43.6% vs 14.3%).
Awareness itself can trigger symptoms. This doesn't mean side effects aren't real — but context matters.
| Decreased libido | 1.8% (vs 1.3%) |
| Erectile dysfunction | 1.3% (vs 0.7%) |
| Decreased volume | 0.8% (vs 0.4%) |
| Resolving on stop | Most cases |
Source: FDA prescribing information, Phase III data
Dutasteride blocks 90–99% of DHT (vs finasteride's 70%) by inhibiting both Type I and Type II 5α-reductase enzymes.
Inadequate response to finasteride after 12+ months
Plateau in hair gain after initial finasteride improvement
More aggressive hair loss requiring stronger DHT suppression
Comfortable with off-label prescribing (common medical practice)
Get a prescription from a licensed provider through a quick online consultation. No waiting rooms, no awkward conversations.
Physician-owned platform specializing in custom compounding. One of the few providers offering both finasteride and dutasteride in oral and topical formulations.
Physician-supervised men's wellness programs covering hair, weight management, and longevity. Streamlined intake, transparent pricing, and discreet home delivery.
Dermatologist-founded telehealth focused exclusively on hair loss. Custom-compounded prescription topicals combine finasteride, minoxidil, and supporting actives in a single formula.
Affordable telehealth marketplace connecting you directly with dermatologists and physicians. Pay per visit — no recurring subscription, no insurance required.
Telehealth platform offering programs across men's wellness, weight management, and metabolic health. Licensed providers and prescription home delivery.
Compounded GLP-1 weight management programs alongside ED and NAD+ therapy. For men addressing hair loss as part of a broader wellness routine.
All consultations are with licensed healthcare providers. Prescriptions issued only if clinically appropriate. Affiliate Disclosure: This site earns commissions on referrals. Editorial content is independent.
DHT levels drop within 24–48 hours of your first dose. But visible hair changes take longer — most men see stabilization by month 3–6 and noticeable regrowth by month 6–12. Peak results typically appear around month 12–18 of consistent daily use.
Yes. Telehealth platforms like Strut Health, Care Bare Rx, and Sesame Care connect you with licensed providers who can prescribe finasteride after a brief online consultation. The entire process from intake to prescription typically takes 24–72 hours, with medication shipped to your door.
Finasteride blocks Type II 5-alpha reductase and reduces scalp DHT by roughly 64–70%. Dutasteride blocks both Type I and Type II 5-alpha reductase and reduces DHT by 90–99%. Dutasteride is more effective at hair count increases but is FDA-approved only for BPH in the US, so it's prescribed off-label for hair loss.
For the vast majority of men, sexual side effects resolve within weeks of stopping the medication. Persistent symptoms after discontinuation — sometimes called post-finasteride syndrome — are rare but reported. Phase III trial data showed a 3.8% rate of sexual side effects on finasteride versus 2.1% on placebo.
Topical finasteride has shown comparable efficacy to oral in several studies, with significantly lower systemic absorption and reduced side effect rates. It's a strong option for men concerned about systemic side effects. Compounding pharmacies like Strut Health offer both formulations.