Confident man with healthy hair
FDA-Approved Since 1997 • 27+ Years of Safety Data

Stop Hair Loss
At the Source

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.

Start Your Consultation Learn How It Works
87%
See Improvement
<$1
Per Day (Generic)
3.8%
Report Side Effects

How Finasteride Works

The science is straightforward. Your body converts testosterone to DHT, and DHT shrinks hair follicles. Finasteride blocks that conversion.

The Problem: DHT

In genetically susceptible individuals, DHT (dihydrotestosterone) binds to hair follicles and causes them to shrink over time. This is androgenetic alopecia.

The Solution: Block It

Finasteride inhibits 5-alpha reductase — the enzyme that converts testosterone to DHT. This reduces scalp DHT by approximately 64-70%.

The Result: Hair Recovery

Without DHT attacking your follicles, miniaturization stops. Many follicles recover. 83% of men maintain or improve hair at 2 years.

What to Expect: Your Timeline

1

Month 1-3

DHT levels drop within weeks. You may experience temporary shedding — this is normal and often a good sign.

2

Month 3-6

Shedding slows. Hair loss stabilizes. Some early signs of improvement may appear.

3

Month 6-12

Visible improvement for most responders. Thicker hair, better coverage, increased density.

4

Month 12+

Peak results. Continue treatment to maintain gains. Benefits last as long as you stay on treatment.

HONEST INFORMATION

Side Effects: What the Research Actually Shows

We believe in transparency. Here's what clinical trials found — the real numbers, not fear-mongering or minimization.

Sexual Side Effects

The most discussed concern. Here's the data from Phase III trials:

Finasteride: 3.8%
Placebo: 2.1%

The difference is real but small. Most side effects resolve with discontinuation.

The Nocebo Effect

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.

What If You Experience Side Effects?

Talk to your provider. Options include reducing dosage, switching to topical finasteride (lower systemic absorption), or discontinuing. Most side effects resolve within weeks of stopping.

Clinical Trial Data Summary

Decreased libido
1.8% (vs 1.3% placebo)
Erectile dysfunction
1.3% (vs 0.7% placebo)
Decreased ejaculate volume
0.8% (vs 0.4% placebo)
Side effects resolving on discontinuation Most cases

Source: FDA prescribing information, Phase III clinical trial data

LEVEL UP OPTION

Dutasteride: When Finasteride Isn't Enough

Dutasteride blocks 90-99% of DHT (vs finasteride's 70%) by inhibiting both Type I and Type II 5α-reductase enzymes. It's the stronger option — and major competitors like Hims, Keeps, and Roman don't offer it.

More effective: Head-to-head trials show significantly greater hair count increases vs finasteride

Similar side effect profile: Meta-analysis found comparable rates to finasteride

Off-label in US: FDA-approved for BPH only, but approved for hair loss in Japan, South Korea, Taiwan

Compare Finasteride vs Dutasteride

Who Should Consider Dutasteride?

1

Inadequate response to finasteride after 12+ months

2

Plateau in hair gain after initial finasteride improvement

3

More aggressive hair loss requiring stronger DHT suppression

4

Comfortable with off-label prescribing (common medical practice)

Ready to Take Control?

Get a prescription from a licensed provider through a quick online consultation. No waiting rooms, no awkward conversations.

Strut Health

Dutasteride Available

Offers both finasteride and dutasteride. Topical options available. Free consultations.

From $20/month
Start Free Consultation

MangoRx

TRT Available

Hair loss, ED, weight loss, and TRT. Full men's health platform with licensed providers.

Varies by treatment
Start Free Consultation

Sesame Care

Best Value

Affordable telehealth for hair loss, mental health, and more. Real doctors, transparent pricing.

From $15/consultation
Start Free Consultation

All consultations are with licensed healthcare providers. Prescription issued only if appropriate for your situation.

Your Hair, Your Choice

We're here to give you the information — not to pressure you. Treatment is a personal decision. Whatever you choose, you're now informed.

Part of the GrowThickHair network. Also explore: MinoxidilQuick.com