Any physicians prescribed propecia (finasteride) or proscar and had patients experience adverse affects such as ed, low testosterone, etc, ? irreversible sides?

Proscar (finasteride) side effects: This is an anecdote. In my last practice i had one patient, a 40 year old male, who underwent hair transplants in 2008 and took Proscar (finasteride) as part of the protocol. He had previously been sexually vigorous, but reported that 4 months larter he experienced total loss of libido and erections, harming his relationships. His testosterone test and pituitary hormones were normal. The cause is not yet prove.

Both affect ED: Both affect ED , but this is temporary and ED should subside after medication is discontinued.