Finasteride vs Minoxidil

The Dose Guy’s verdict

Oct 27, 2026
8 sources

Run both. This is the standard stack because the two do different jobs: finasteride stops the DHT that is shrinking your follicles, and minoxidil pushes them to grow. If you will only do one and you are a man, it is finasteride, because minoxidil alone grows hair on follicles that are still being shrunk. Go topical on both where you can. For women, minoxidil is the pick.

Which would I take?Both. Finasteride if it's only one.

How they differ

The difference that matters is cause versus push. Finasteride blocks the enzyme that turns testosterone into DHT, the hormone behind pattern loss, so the shrinking slows or stops and most men regrow some on top. Minoxidil never touches hormones. It is a vasodilator, a blood-vessel opener, and it pushes resting follicles into growing and keeps them there longer. Finasteride is the floor and minoxidil is the lift. Either one alone leaves half the job undone, which is why “which is better” has a boring answer.

The costs differ, and that is the which-is-safer answer. Finasteride’s catch is hormonal: sexual side effects in a minority, mostly gone after stopping, and topical finasteride exists to cut how much drug reaches your blood. Minoxidil’s catch depends on the route. Topical is a scalp nuisance, itch and flaking. Oral raises your heart rate and grows hair everywhere. On the routes most people should run, neither is dangerous; they ask you to watch different things.

The routine is where people quit. Oral finasteride is one pill at any time of day, and a missed dose costs nothing. Topical minoxidil is the chore: dry scalp, once or twice a day, dry before bed, and it only works while you keep it up. That chore is why people quit minoxidil, and why low-dose oral minoxidil exists. Women skip finasteride while pregnancy is possible, because it can harm a male fetus; minoxidil is their tool.

What the research shows

The direct comparisons that exist are small. The big evidence for each one is against placebo, not against the other, so these are different trials in different men:

No large head-to-head trial of finasteride against minoxidil exists; the big trials behind each were placebo-controlled.as of Aug 2026

Among men who stayed on blinded treatment, finasteride 1 mg daily produced 138 more hairs than placebo in a 5.1 cm² balding vertex area at year 2.JAAD 1998 · phase 3 · n=1553

Topical finasteride increased hair count by 20.2 hairs versus 6.7 with placebo at 24 weeks, numerically similar to oral finasteride, while peak plasma concentration ran more than 100 times lower.JEADV 2022 · phase 3 · n=458

A Bayesian network meta-analysis ranked topical minoxidil 5% twice daily as the most effective topical over-the-counter treatment for 24-week hair-density change in male pattern hair loss.IJMS 2025 · Bayesian NMA · 24wk

During 267,983 person-years of follow-up from the Prostate Cancer Prevention Trial, none of 22 conditions proposed as post-finasteride syndrome showed a statistically significant association with former finasteride use.Urology 2026 · PCPT linkage · 267,983 person-years

No number here says which one grows more. They say both work, the topical version of each holds up, and the loudest fear about finasteride did not show up in the longest follow-up.

How people run them

Start both together, or start finasteride a month ahead if you want to know which drug caused a side effect. Finasteride is 1 mg a day by mouth, or topical finasteride daily, which is where I would start most people. Minoxidil is topical 5% on a dry scalp, once or twice a day. Compounded sprays put topical finasteride and minoxidil in one bottle, which turns two scalp routines into one if the chore is what trips you up.

Expect a minoxidil shed between weeks two and eight. Resting hairs are making way, and the stack is working. Judge the pair at six months and again at twelve, with photos in the same light. Both are maintenance: stop either one and what it was holding drifts back over the following months.

If the scalp routine is what keeps failing, low-dose oral minoxidil at 1 to 2.5 mg a day is the fix; stay at 2.5 mg or below. If finasteride is not enough after a full year, dutasteride takes its slot and minoxidil stays. Microneedling every one to two weeks is the strongest add-on to minoxidil; skip minoxidil on needling day. Ketoconazole shampoo a few times a week rounds out the stack.

Finasteride, topicaldailySame scalp benefit, far less in your blood. The better start for most.

Finasteride, oral1 mg/dayOne pill, any time of day.

Minoxidil5% topical, 1–2x/dayDry scalp, dry before bed. Consistency is the whole game.

The stackboth, dailyOne stops the cause, the other pushes growth.

Oral minoxidil1–2.5 mg/dayFor when the scalp routine is what fails.

Side effects, side by side

Two separate side profiles, which is why they stack without piling up:

commonItch and flaking where the minoxidil goes on. Foam is gentler than solution, which matters more when two topicals share one scalp.

commonA shed in the first weeks of minoxidil. Expected and temporary.

commonLower libido, softer erections, or less ejaculate on finasteride, in a small minority. Most resolve after stopping, and topical lowers the exposure. Pushing through sexual changes is not the move.

monitorOral minoxidil raises heart rate, can hold water in your ankles, and grows facial and body hair. Check your resting heart rate and stay at 2.5 mg or below.

monitorSmall mood and anxiety signals for finasteride in population studies. Rare, worth noticing if they show.

anecdotalWatery semen on finasteride, reported more often than trial rates suggest. Harmless and reversible.

monitorResidue travels. Minoxidil is toxic to cats, and finasteride must stay away from anyone who is or could be pregnant. Let topicals dry fully before bed, and wash your hands after applying.