Hi

I am 27 years old male. I am suffering from hair fall. So, I have been prescribed by a doctor to take Finax(1mg) tablet on alternate days for 3 months, which i started taking from past one month. However, I have read about the side effects of Finax like low libido, itching in groin area, sort of erectile dysfunction(impotency) etc. Of late , I too have started experiencing low libido and not so strong erection. So, please clear my following doubts:

Does this tablet has serious side effects in long run ?
Are these side effects temporary (which will last only during the medication course)?
Will this medication reduce my sperm count or can it affect the quality of sperms?
Can this tablet cause impotency in long run?