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Skin & Hair
Finasteride
Finasteride · Film-coated tablets
A 5-alpha-reductase inhibitor used for male pattern hair loss, as set out in its product information.
- Partner pharmacy
- Personal assistance
- Discreet delivery
- Active ingredientFinasteride
- Strength1 mg
- FormFilm-coated tablet
- AdministrationOral, once daily
Shipping & Delivery
- Normally dispatched within 24 hours of payment confirmation.
- UPS Express · £12 · Approx. 7–9 business days
- Registered Mail · £8 · Approx. 14–20 business days
What finasteride 1 mg is
Finasteride inhibits the enzyme 5-alpha-reductase, which converts testosterone into dihydrotestosterone (DHT). At 1 mg it is used for male pattern hair loss, as set out in its product information.
Less DHT at the hair follicle
Finasteride inhibits type 2 5-alpha-reductase, the enzyme that converts testosterone into dihydrotestosterone (DHT) in the scalp. Lower DHT slows the miniaturisation of hair follicles that causes male pattern hair loss.
Type 2 5-alpha-reductaseInhibited; less DHT in the scalp.
TimescaleEffects usually appear after 3–6 months of daily use.
In two one-year trials in men with male pattern hair loss, finasteride 1 mg increased hair counts compared with placebo.1 The effect is reversed within about 12 months of stopping.
Side effects and warnings
Reported side effects include:
- Reduced libido, erectile dysfunction and ejaculation disorders
- Breast tenderness or enlargement
- Depression and, rarely, suicidal thoughts.2
ImportantSexual side effects may persist after stopping.3 Finasteride roughly halves PSA values, which must be taken into account in prostate testing. Women who are or may become pregnant must not handle crushed or broken tablets. Always read the patient information leaflet.
Product information
Patient information leafletSupplied by the partner pharmacy
Summary of Product CharacteristicsOfficial product information
Common questions
Do I need a prescription?
Finasteride 1 mg is a prescription-only medicine. After your request, the partner pharmacy verifies whether and how supply is possible, for example through an existing prescription or an assessment by an independent doctor where permitted.
How long does it take to work?
Effects usually appear after 3–6 months of daily use. If treatment is stopped, the effect is reversed within about 12 months.
Does it affect PSA tests?
Yes. Finasteride roughly halves PSA values. Tell your doctor that you take it before any prostate test.
Do I pay when I send a request?
No. Payment is arranged individually with customer service once your request has been reviewed and can proceed.
Sources
- Kaufman KD, et al. Finasteride in the treatment of men with androgenetic alopecia. J Am Acad Dermatol. 1998;39:578–589.
- MHRA. Finasteride: reminder of the risk of psychiatric side effects and of sexual side effects (which may persist after discontinuation of treatment). Drug Safety Update, 29 April 2024.
- MHRA. Finasteride and dutasteride: updated safety warnings for psychiatric side effects and sexual dysfunction. Drug Safety Update, 11 May 2026.
- Propecia 1 mg film-coated tablets: Summary of Product Characteristics. Organon.
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