I took it for only 5 days, but then stopped. I went back to normal. I remember some clown here claimed to have heard of people suffering from permanent impotence from people using the drug for as little as 10 days. Think of it this way: 1 Proscar pill - someone dropped it into your coffee over a period of 5 days - and now you have permanent sexual side effects. Uh, no. That doesn’t seem reasonable at all, unless you’ve been taking it over a period of months, but in either case, you haven’t come back and let us know after a month, so we can assume you’re alright.