Younggun, I have had the same experience as you. I am a guy in my early 20's and about two years ago I went on Proprecia for about a year. I definitely did experience some side effects of the drug and personally I was not comfortable risking my health, even though two doctors I visited told me it was a "safe" drug. While getting off Proprecia I just stopped taking the pills, I did not have to taper down my dosages as you are suggesting.