I have been taking Propecia since i was 22 i am now 36. There is no doubt in my mind that this drug has slowed down my receding hairline. I have lost ground over the years but i am 36 now and a norwood 2, wich makes me very happy. i was a norwood 1 or more when i started. I don"t really remember any shedding or loss of libido or real side effects when i started, i just took the drug because i was desperate and hair loss was ruining my confidence. I have always had a strong sex drive and no loss of hard erections. The only thing i wish i had have done when i first started propecia was to get a blood test to see how high my DHT was in my system and test it annually, also wish i had have used Nizoral. The last 6 months i have noticed my temples getting a little thinner, i have not changed anything in my life i am a avid weight lifter have been since i was 22. I have had the same hair stylist for the last 8 yrs and he said he cant tell its getting thinner but i can. I am thinking i have built up a tolerance to propecia, so i have stopped it since Dec 15, 2010 a little over a month so far, i want to see if i can jump start the process over again. I am gonna make a doctor appointment for blood test to see my dht levels and restart propecia, i may wait a couple more weeks before starting again. I dunno if i am doing the right thing stopping propecia but its not gonna hurt to try. I have noticed since i have stopped taking propecia i have a bit more energy and a little sharper mentally and a little more aggressive. I will update on this forum as soon as i see my doctor and get her input and tests. Well thats my story feel free to ask any questions.