Surprising. Except B1 of which i'm not sure except its importance in carbohydrates metabolism, Zn is well known to improve hair, Mg lowers calcium, reudce potential calcifications and aids in multiple areas responsible of hair loss, anecdotal experiences and studies on B6 tends to support the theory of pyroxydine helping fat/protein metabolism and hair growth as well as lowering prolactin, Vit E lowers prolactin and estrogen, both of them responsible of hair loss in Men .
The mineral chemistry this mix put you in is probably the reason you lost your hair but if we were to chose a culprit, it would be hard to pinpoint one
Didnt they include Chromium in ?