Hi Docytor My Hair Was Starting Fall 3 Yr Ago

hi docytor
my hair was starting fall 3 yr ago ...i am 28 y old now ...i used subex z and vitamin e capsule...
if i use medicine then my hair is not falling ...if i leave it then it again falling out...
i wanna know these medicine have any side effect or not by continue using....
at last i also use shampoo once a week recomended by a doctor ( hair refine shampoo)