Hi Doctor. So if I skip taking my morning Propecia a couple times a week, I shouldn’t be at risk of making the Propecia ineffective right? I just want to see if I can make this 30 day supply last maybe 38-40 days. I know the Propecia is working for me since I stopped seeing hair falling out and landing on my shoulders, but I want to make this stuff last as long as possible. Thanks!!!

Propecia has a half life of 4-6 hours, which means that it will be effectively out of your body in a day. Prolonging the time between doses will just guarantee that the drug will be less effective for you.