I am on various meds and my hair has gotten so thin

I have been on the same meds for years all of a sudden the past 2/3 months my hair has gotten so thin all I do is cry!! I take zinc,vit D3,magnesium, acidolphilus bifidus,iron,Biotin and a multiple!!!! Workout n drink high protein with coconut oil!! Cleanse with Borax internally n externally!!! But I need some help what is causing this I can't be here I'm not OK OK. :)