Hi and welcome to HCM.
It should be taken for 3 months till first results occur. But success depends from man to man and unfortunately isnt very promising. Also it has some unpleasant side effects such as impotence
, loss of interest in sex, abnormal ejaculation swelling or tenderness in your breasts, headache. Also it can effect liver
enzymes. I suggest to take this medicines but do frequent liver check ups and stop it if you notice any of these side effects. Wish you good health.