Can some vitamins cause side effects?What kind of vitamins?

Question

Can some vitamins cause side effects?What kind of vitamins?

Answer 1

Vitamins A, D, and E are not water soluble, so you can overdose on them if you're taking supplements.  Vitamins B and C excesses get peed out (you can see the yellow color of C in the toilet).

Answer 2

Yes, Vitamins/Supplements from a company named Mannatech. They can cause odd behaviors,lack of memory,depression etc...  

The best vitamins are from your drug store.