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.

Counterfeit medications

Counterfeit, or fake medications increasingly publicised on the internet are illegal and potentially very harmful to your health. They often contain reduced amounts of the active ingredients, the wrong ingredients entirely or even harmful substances. To avoid counterfeit medicines, ensure that you:

  • Get your prescription from a registered pharmacist
  • Collect your prescription from a pharmacy or reputable outlet
  • Look for the internet pharmacy logo when obtaining medicines online

If you are worried that your medication may be counterfeit, please contact MSD at

Alternatively you can also contact the MHRA 24 hour counterfeit hotline on 020 3080 6701 or email

Merck Sharp & Dohme Limited advises that patients have an appropriate medical assessment by a healthcare professional before obtaining treatment for male pattern hair loss.

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
©2018 Merck Sharp & Dohme Limited. All rights reserved