Description
What is Propecia (finasteride 1mg) and what is it used for?
Propecia is a branded form of finasteride 1mg, a prescription treatment for male pattern hair loss (also known as androgenetic alopecia) in adult men. It is designed to help slow further hair thinning and, for some men, improve hair growth with continued use.
Finasteride 1mg is indicated for male pattern hair loss in men. It is not intended for women or children.
How finasteride works
Finasteride reduces levels of dihydrotestosterone (DHT) on the scalp by blocking the enzyme that converts testosterone to DHT. In men who are genetically predisposed, DHT contributes to shrinking of hair follicles and progressive thinning.
When to expect results
Finasteride works gradually. Continuous daily use for 3–6 months is usually needed before you can assess benefit. If treatment is stopped, gains typically reverse over time.
Who is finasteride 1mg suitable for?
- Adult men with male pattern hair loss.
- Men who understand it is a long-term treatment and are willing to take a daily tablet.
How to take finasteride 1mg
- Take 1 tablet once daily, with or without food.
- Try to take it at the same time each day.
- If you miss a dose, take the next dose as normal — do not double up.
Important safety information
- Do not use finasteride if you are allergic to finasteride or any ingredient in the tablet.
- Finasteride must not be used by women. It is contraindicated in women due to pregnancy risk.
- Women who are pregnant or may become pregnant should not handle crushed or broken tablets. Whole tablets are coated, but damaged tablets should be avoided.
- Tell a clinician if you notice breast changes such as lumps, pain, swelling, or nipple discharge.
Mood and sexual side effects (important)
Finasteride has been associated with sexual side effects (such as reduced libido or erectile dysfunction) and psychiatric side effects (such as low mood/depression and suicidal thoughts). In some reports, sexual side effects have persisted after stopping treatment.
- If you develop low mood, depression, or suicidal thoughts: stop treatment and seek medical advice urgently.
- If sexual side effects occur and are bothersome or persistent: speak to a clinician for review.
MHRA safety reminder and NHS guidance.
Side effects
Like all medicines, finasteride can cause side effects, although not everyone gets them. If you are worried about any symptoms, seek medical advice.
Examples of possible side effects include
- Reduced sex drive
- Difficulty getting or maintaining an erection
- Ejaculation changes
- Breast tenderness, lumps, or nipple discharge
- Low mood or depression
See NHS and official product information for full details.
Frequently asked questions
Is finasteride the same as Propecia?
Propecia is a brand name. The active ingredient is finasteride 1mg. Many pharmacies supply branded or generic versions depending on availability.
Do I need to take finasteride every day?
Yes. Finasteride is intended for daily continuous use. Benefits typically require several months, and stopping treatment usually leads to gradual reversal of results.
Can I use finasteride with minoxidil?
Some men use topical minoxidil alongside finasteride. However, not all combinations have robust data in product information, so it’s best to follow clinician advice and product guidance.
What should I do if my hair loss pattern is unclear?
Finasteride 1mg is for male pattern hair loss. If your hair loss is sudden, patchy, associated with scalp disease, or accompanied by other symptoms, you should seek medical advice before starting treatment.
Always read the patient information leaflet before use.
Side Effects
As with all medicines, Propecia may cause side effects in some people, although not everyone will experience them.
Possible side effects include:
Erectile dysfunction
Reduced sex drive
In many cases, these effects may improve or resolve with continued treatment. However, if symptoms are severe, persistent, or troublesome, you should speak to your doctor about whether continuing treatment is appropriate.
Allergic reactions
In rare cases, Propecia may cause an allergic reaction. Symptoms can include:
Skin rash or itching
Swelling of the lips, face, tongue, or throat
Difficulty breathing or swallowing
If you experience any signs of an allergic reaction, stop taking Propecia immediately and seek urgent medical advice.
