I would justlike to say that I have also experienced the mood swings while on Propecia. I have been taking it for about 6 months now. I feel more anxious, stressed, and foggy headed. Please research this so more people are aware. Thank you.
It might be difficult to come up with the answer you are looking for. Men do get mood swings without Propecia. I can remember many moody men whose wives report mood problems that may turn out to be caused by many other factors. It is possible the finasteride is a cause of such swings as many other causes can be the etiology. I am not in a position to perform clinical research for this question, although it is a good one.
In my personal experience, I noticed a pronounced calming effect. I’m far more mellow and easy-going in stressful situations since beginning Propecia therapy.