i think the notion that propecia doesnt work for everyone is a lil off, it could be still working for some people that still go below baseline because without the drug they could of been 5 times worse. some also respond quicker to the drug first 6 months some take a full year some take even year and half but if u have male pattern baldness its a safe bet that propecia is going to cause more good then harm, how effective depends on your genetics and response to the drug. then there is always the very rare percent maybe 1 percent that it causes hairloss because their body cant handle the drug. if your hairloss is way to aggressive then i can see where dutasteride would be more affective so it all depends on the person.