Finasteride vs minoxidil: which should I start with?

Short answer

• If you want the simplest, lowest‑risk place to start: try topical minoxidil (OTC) first.
• If you’re a man with clear male‑pattern hair loss and you want the most effective single option, oral finasteride (1 mg/day) is generally more powerful — or use finasteride + minoxidil together for the best results.
• If you’re a woman of childbearing potential, do NOT take finasteride; topical minoxidil is the usual starting point and women’s specialty care (derm or endocrinology) can discuss other options.

Why (plain explanation)

• Mechanism and effectiveness
  • Finasteride (oral, 1 mg/day) blocks DHT and slows or reverses androgenetic hair loss. It’s usually the most effective medical treatment for male‑pattern loss, especially at the crown and mid‑scalp.
  • Minoxidil (topical, 2% or 5%) increases blood flow to follicles and lengthens the growth phase. It works for many people, particularly for vertex/crown thinning, and is available OTC.
• Time to see results: both take months — you need at least 3–6 months and often 6–12 months to judge effectiveness.
• Side effects and safety
  • Finasteride: possible sexual side effects (lower libido, erectile dysfunction), rare mood effects, and it can lower PSA levels. Contraindicated in pregnant women (can cause birth defects in a male fetus).
  • Minoxidil: mainly local irritation, itching, or initial increased shedding; systemic effects are uncommon but possible (e.g., heart palpitations) at high absorption.
• Stopping either drug generally leads to loss of any gained hair within months.

Practical recommendations by situation

• Male, comfortable with prescription and side‑effect risk: start finasteride (1 mg/day) — many people add 5% minoxidil topical for faster and additive results.
• Male, worried about finasteride side effects or wanting to try something without a prescription first: start 5% minoxidil (foam or solution) and re-evaluate in 3–6 months.
• Female (especially if pregnant/planning pregnancy): start topical minoxidil (women’s 2% or 5% foam) and see a dermatologist for additional options (e.g., spironolactone is commonly used in women). Finasteride is usually avoided unless under specialist care and strict contraception.

Brands and services (specific recommendations)

• Minoxidil brands: Rogaine (well‑known, reliable), Kirkland Signature Minoxidil (Costco brand — effective and more affordable), Lipogaine (often combined with supportive ingredients). For women: Rogaine Women’s 5% foam is a common choice.
• Finasteride: generic finasteride 1 mg is widely prescribed and less costly than brand Propecia (Propecia = brand name). Effectiveness is the same for generic.
• Telemedicine and refill services (convenient for prescriptions and follow up): Hims, Keeps, Roman — these specialize in hair loss, offer online consults and ongoing prescriptions/refills, and can be convenient if you don’t want an in‑person visit. You can also see your primary care doctor or a dermatologist for a full evaluation.
• Dermatologist: if you want the most accurate diagnosis and options (PRP, low‑level laser, transplants, tailored meds), book with a board‑certified dermatologist.

Next steps I suggest

1. Tell me your sex, age, whether you’re trying to get pregnant or could become pregnant, and what part of the scalp is thinning (hairline, crown, diffuse). I can give a more tailored suggestion.
2. If male and comfortable, consider seeing a clinician for a finasteride prescription (or use a telemedicine service above). If not, start 5% minoxidil now.
3. Plan to reassess at 3–6 months and continue treatment long‑term for maintained benefit.

If you want, I can:

• Help compare minoxidil product options and costs near you,
• Walk you through questions to ask a prescriber,
• Or recommend whether to see a dermatologist versus starting with a telehealth provider.