Finasteride vs minoxidil: which should I start with?

Short answer

• If you are a man with classic male‑pattern (androgenetic) hair loss and you’re comfortable taking a prescription blood drug, start finasteride (1 mg daily). It’s the most effective single therapy to stop progression and regrow hair.
• If you prefer to avoid systemic medication or are a woman (especially of childbearing potential), start topical minoxidil (OTC). It’s safe, easy to try, and helpful for many people.
• Best results for men usually come from the combination: finasteride + topical minoxidil.

Why (quick comparison)

• Finasteride (oral, 1 mg/day)

  • Mechanism: blocks conversion of testosterone to DHT (the hormone that shrinks hair follicles).
  • Effectiveness: often better at stopping progression and producing regrowth than minoxidil alone.
  • Timeframe: some improvement seen by 3–6 months; clearer benefit by 6–12 months.
  • Main risks: decreased libido, erectile dysfunction, decreased ejaculate volume in a small percent; rare mood changes. Not safe in pregnancy (teratogenic risk to male fetus) — women who can become pregnant must not handle crushed tablets.
  • Brands/services: Propecia (brand name), generic finasteride (usually much cheaper). You’ll need a prescription — telehealth options that commonly prescribe finasteride include Hims, Roman, Keeps (convenient for follow-up and monthly shipping).

• Minoxidil (topical)

  • Mechanism: vasodilator that stimulates follicles; exact mechanism for hair growth not fully known.
  • Effectiveness: helps maintain hair and can produce regrowth, but generally less potent than finasteride for stopping DHT-driven shrinkage. Works for many men and women.
  • Timeframe: 3–6 months to see results; must be used continuously or the benefit is lost.
  • Side effects: scalp irritation, itching, unwanted facial/body hair in some people, initial increased shedding for a few weeks.
  • OTC brands: Rogaine/Regaine (5% foam for men; 5% foam is commonly used for women too), Kirkland Signature (Costco) 5% solution/foam (cheaper), Equate (Walmart). Foam 5% is convenient and tends to be less irritating than some solutions. Typical dosing: 5% solution/foam once or twice daily for men; 5% foam once daily is common for women.

Special considerations

• Women: finasteride is generally not recommended for women of childbearing potential. For women with androgenetic alopecia, topical minoxidil is first-line; dermatologists may consider oral anti-androgens (spironolactone) or low-dose finasteride in select postmenopausal women.
• If you’re unsure whether your hair loss is pattern hair loss (vs telogen effluvium, alopecia areata, etc.), see a dermatologist before starting treatment.
• Combination therapy (finasteride + minoxidil) gives additive benefit for many men.
• Follow-up: give a trial of at least 6 months (preferably 12) before judging effectiveness; if you start finasteride, check in with your prescriber about side effects or PSA concerns if you are older.

Actionable next steps

1. If you’re male and comfortable with a prescription: discuss finasteride 1 mg/day with your PCP or dermatologist, or use a telehealth service like Hims, Roman, or Keeps to get a prescription conveniently. Add OTC minoxidil (Rogaine or Kirkland 5% foam) if you want faster/greater results.
2. If you want to avoid a prescription or are female: start topical minoxidil (Rogaine/Regaine 5% foam or a reputable generic). If you’re a woman of childbearing age, discuss options with a dermatologist.
3. If you have concerns about side effects, a dermatologist can review alternatives (e.g., topical finasteride compounding, spironolactone for women, PRP, hair transplant).

If you want, tell me your sex/age and how your hair is thinning (front, crown, diffuse) and I’ll give a tailored recommendation and specific product links/telehealth options.