Hi Eryka,
I cut and paste this from a message board for you:
Hi There - always make sure you take your vitamins with food - it is the B's and the zinc that can contribute the most to nausea. Take the vitmains at the beginning of the meal and you may want to add in a digestive enzyme to help with absorption of your nutrients and supplements. If you still get nausea - I am sure it is dose dependent so try taking the multi vitamins 1/2 at the beginning of each meal. Hope this helps.
Dixie