I am a 33 year old male. I had been using Propecia for 3 years and switched to Dutasteride approximately 6 months ago. Since switching to Dutasteride, I am experiencing less sexual side effects than Propecia, even at 1.0mg daily dose (twice the dose which is recommended in treating BPH) – I am also experiencing more hair regrowth than Propecia. I am wondering how and where you draw the inference that Dutasteride has the potential to cause sterility. Any firm evidence, clinically?
Just like your positive hair growth experience with dutasteride there are others who have negative experience with sterility and sexual side effects.
I cannot find a study or firm evidence, but I always try to balance risks and benefits. If you are never planning to have children, then it may not matter but if you are, why would you want to risk it? In addition dutasteride is not approved for the treatment of genetic balding and there is also no clear evidence it is much better than Propecia (despite your personal experience). If you want to know if you now have a problem, your doctor can order a sperm count which will show a problem if there is one.