I work in a veterinary hospital and know that A,D and E and K are all toxic to the body
and are especially hard on the liver.
I agree that OTC/commercial vitamins
I found a good brand--Rainbow Light, that has NO A,D.E or K in it, It;'s all B and C and minerals and no iron. The minerals are top notch--such as Calcium Citrate instead of taht tainted ****, Carbonate made of Oyster Shells.