I have been on Duta's (Avodart) for 3 months now.
Have to say all is fine, well I am a little bit less frisky so to speak but other than than nothing to report.
I was prescribed it for hair loss too, it hasn't done a great deal as yet but from my understanding it takes around 5 months or so to see anything.
So far as side effects go I was under the understanding that they usually only show in the first month or so and then subside, as your body must get used to them.
Same with most drugs that change chemistry internally I believe.
Hope that helps.
Oh' by the way I just remembered it takes about a month for Duta's to build up to a strong working level, as in the 90% DHT inhibition.
Before that it sits quite lower something like 70-75% - just thought I would throw that in there - don't ask where I read it cause I really can't remember.