This section of the website is for UK men who have already been prescribed Propecia. If you are a healthcare professional, visit the HCP section of the site. This website is not intended to replace the advice of a healthcare professional. You should consult your doctor or another suitably trained healthcare provider when considering what type of treatment is most appropriate for you.

Frequently asked questions

Q. I already have a receding hairline, will Propecia (finasteride) work for me?

A. This medication is suitable for men who have begun to show signs of mild to moderate male pattern hair loss, such as a receding hair line, or a thinning of the hair on the scalp.

Q. Will Propecia cure my hair loss completely?

A. No, the medication will not cure your hair loss, however, clinical trials have shown that at 24 months this medication improved hair growth, based on hair count, in two-thirds (66%) of men, compared with just 7% of those taking no drug. After 5 years, nine out of 10 (90%) of men taking this medication had visible results (re-growth or no further hair loss). Nearly half (48%) were rated as improved compared with 6% of men who took no drug.

It will take three to six months before you can expect to see evidence of stabilisation of hair loss, so stay on the treatment to give yourself the best chance of success. You will need to keep taking your treatment to see the benefit, otherwise you may lose the hair you have gained so far within nine to twelve months.

Q. Can Propecia be used in women too?

A. No, this medication is not indicated for use by women.

Q. I’ve heard this treatment can affect my sex drive, should I be worried?

A. Only a small number of men (1 in 100 to 1000) experience less desire to have sex and/or difficulty in achieving an erection which may continue after stopping the medication. A similar number (1 in 100 to 1000) may have a decrease in the amount of semen released during sex (this does not appear to interfere with normal sexual function).

Q. Can I take this medication if I am trying to have children?

A. Although animal studies did not show relevant negative effects on fertility, spontaneous reports of infertility and /or poor seminal quality were received post marketing. A small amount of Propecia, (less than 0.001%) has been detected in semen of men taking the treatment. Studies have shown that this amount is unlikely to be a risk to the developing baby. On balance when reviewing this information we do not recommend use of this medication if you are planning to father a child.

Merck Sharp & Dohme Limited Registered Office: Hertford Road, Hoddesdon, Hertfordshire, EN11 9BU.
A company registered in England and Wales. Company Registration Number: 820771

GB-PRO-00005 | Date of preparation: January 2019
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