Vitamins act as co enzymes in your body meaning that they are there to speed up the chemical reactions that take place in your body. Considering that THC is a chemical I'd say taking vitamins is a safe bet to help get yourself going; but, I wouldn't know what ones to even take On a side note I used to drink lots OJ when I would take shrooms to help get myself going on them so mabye it works the same for bud.