What percent of men experience the side effect (decrease in sexual desire) when using Propecia? Whether you take 1 mg or 5 mg Propecia, does it have to be daily or it could be every other day?
Based on scientific studies, 1-2% of people who experience actual side effects from Propecia have a decreased sex drive. This side effect does seem to be dose dependent and it may increase by adding to the dose of the medication. In order to prevent hair loss, it is recommended to take no more than 1 mg of Propecia (Finasteride).