<<Disclaimer: Verify this information before applying it to your situation.>> I don't know if this is normal for Celiacs, but I don't absorb vitamins well. I have heard of new vitamins which are sprayed under one's tongue. The result is that the vitamins are directly absorbed into the blood, bypassing the gastrointestinal system. If I take vitamins orally, they can be destroyed in the liver or not absorbed in my damaged gut. Has anyone had experience with spray vitamins? Or know of someone who carries such a product? Thanks!