Metformin is a medication that is commonly used to treat type 2 diabetes. It is also sometimes prescribed to people with polycystic ovary syndrome (PCOS) or infertility caused by insulin resistance. Metformin can be purchased without a prescription in some countries, including France and the UK. In these countries, it is available over the counter at pharmacies and can be purchased without seeing a doctor. However, it is important to note that selftreatment with this medication can be dangerous and should only be done under the guidance of a healthcare professional. If you are considering taking metformin, it is important to speak to your doctor first to determine if it is appropriate for you and to ensure that you are using it safely.