I took finasteride for 8 months. Had ball ache in the beggining and prostate discomfort but that went away after a few months. I also had alot of "positive" sides throughout finasteride increased libido and just generally felt good on it. Recently I switched to dutasteride and im experiencing pretty bad sides, extreme anxiety, bad ball ache, prostate discomfort, and all types of pains and wierd feeling all over my body.
My experience with finasteride has been the same, except I had no change in libido, and I had minor weight gain.