Minoxidil vs Finasteride
Side-by-side comparison of Minoxidil and Finasteride: mechanism, half-life, dose range, safety profile, and vendor pricing.
Price snapshot
Minoxidil
Finasteride
Minoxidil
Minoxidil is an FDA-approved treatment for pattern hair loss. Originally an oral blood-pressure drug, its hair-growth side effect led to the topical products (Rogaine) at 2% and 5%. It is a potassium-channel-opening…
Lowest listed price: $29.99 across 1 listing
Full Minoxidil profileFinasteride
Finasteride is an orally-active selective type II 5α-reductase inhibitor that blocks the conversion of testosterone to dihydrotestosterone (DHT), the primary androgenic driver of both benign prostatic hyperplasia (BPH)…
Lowest listed price: $39.99 across 1 listing
Full Finasteride profileSide-by-side comparison
| Attribute | Minoxidil | Finasteride |
|---|---|---|
| Category | Skin & Hair | Pharmaceutical |
| Research Stage | FDA-Approved | Preclinical |
| Mechanism of Action | Minoxidil is a small-molecule vasodilator first developed as an oral antihypertensive. Its hair-growth effect was discovered as a side effect (hypertrichosis) and later formulated into topical products. Minoxidil is a PRODRUG. It must be converted to its… | Finasteride's mechanism is mechanistically straightforward but systemically consequential: it is a potent, selective, irreversible inhibitor of 5α-reductase type II (and, to a lesser extent, type III), which are the enzymes responsible for converting… |
| Half-Life | Oral minoxidil plasma half-life is approximately 3-4 hours; the hair-growth (pharmacodynamic) effect is independent of plasma level and depends on ongoing daily use. | — |
| Typical Dose Range | Oral low-dose minoxidil (off-label): 625-5000 mcg/day (0.625-5 mg). Topical minoxidil is dosed by concentration (2% or 5%), not by mcg -- roughly 10-20 mg of minoxidil is delivered per topical application, with only ~1.4% absorbed systemically. | — |
| Dosing Frequency | Topical: once daily (5% foam) to twice daily (2%/5% solution). Oral low-dose minoxidil (off-label): once daily. | — |
| Administration | — | — |
| Side Effects | Topical (most common, usually mild): - Scalp irritation, itching, dryness, flaking/dandruff -- more with the propylene-glycol solution than the foam [PMID:21700360]. - Temporary increased shedding in the first 2-8 weeks. - Unwanted facial or body hair… | Finasteride's side effect profile requires honest, detailed discussion given the unusual intersection of well-established common transient effects, rare-but-serious effects, and the disputed post-finasteride syndrome phenomenon. Trial data, post-marketing… |
| Molecular Weight | 209.24 g/mol (C9H15N5O) | — |
| Common Vial Sizes | — | — |
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Minoxidil: potential benefits
- Regrows hair and slows further loss in androgenetic alopecia / female pattern hair loss -- its best-supported use, backed by multiple randomized placebo-controlled trials [PMID:12196747][PMID:15034503].
- In men, 5% topical produced roughly 45% more non-vellus hair regrowth than 2% at 48 weeks, with an earlier response [PMID:12196747].
- Increases hair count and hair-shaft width and improves scalp coverage and the psychosocial impact of hair loss [PMID:15034503].
- Once-daily 5% foam is non-inferior to twice-daily 2% solution in women and causes less scalp irritation and dandruff [PMID:21700360].
- Low-dose oral minoxidil (off-label) is a convenient option for people who dislike or cannot tolerate topical, with efficacy comparable to topical 5% in men [PMID:38598226][PMID:32622136].
- Used off-label as an adjunct in other hair disorders such as telogen effluvium, traction alopecia, chemotherapy-induced alopecia, and scarring alopecias [PMID:32622136].
Finasteride: potential benefits
- No structured benefit list published.
Frequently asked
What's the difference between Minoxidil and Finasteride?
Minoxidil is a skin & hair that minoxidil is a small-molecule vasodilator first developed as an oral antihypertensive. its hair-growth effect was discovered as a side effect (hypertrichosis) and later formulated…. Finasteride is a pharmaceutical that finasteride's mechanism is mechanistically straightforward but systemically consequential: it is a potent, selective, irreversible inhibitor of 5α-reductase type ii (and, to a…. The two differ in mechanism, half-life (Oral minoxidil plasma half-life is approximately 3-4 hours; the hair-growth (pharmacodynamic) effect is independent of plasma level and depends on ongoing daily use. vs not reported), and typical dose range.
Which has the longer half-life, Minoxidil or Finasteride?
Minoxidil has a half-life of Oral minoxidil plasma half-life is approximately 3-4 hours; the hair-growth (pharmacodynamic) effect is independent of plasma level and depends on ongoing daily use.. Finasteride has a half-life of not reported. Longer half-lives generally mean less frequent dosing but slower on/off kinetics.
Which is cheaper, Minoxidil or Finasteride?
Lowest listed price on BodyHackGuide: Minoxidil from $29.99, Finasteride from $39.99. Prices are pulled from the vendor listings tracked on BHG and change frequently. See the compare tables on each compound page for the current set of offers.
Can you stack Minoxidil and Finasteride?
Stacking depends on mechanism overlap, safety profile, and goals. Minoxidil and Finasteride should only be stacked after reviewing each compound's individual protocol page, side effect profile, and any published interaction data. Use the BodyHackGuide stack builder for a structured review before combining research compounds.
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Related comparisons
Research use only. BodyHackGuide is a research and price-comparison reference. The compounds discussed on this page are not approved by the FDA for human consumption and are sold strictly for laboratory research. Prices shown are pulled from vendor listings tracked on BHG and are subject to change. We earn an affiliate commission on some outbound clicks, and every vendor is ranked on the same public, reproducible methodology. See editorial standards and affiliate disclosure.