<<Disclaimer: Verify this information before applying it to your situation.>> Thank you all very much for your kind respones to my request for info about vitamins. TWIN LABS came very highly recommended. I called them and they do manufacture their own vitamins from beginning to end but also make non gf vitamins tho they stated that testing is done and there is no contamination. Only 2 people found a problem with them. FREEDA vitamins came second and one person said they took NATURE MADE. Vote was unanamous that vitamins helped considerably with fatigue and stamina. My dietician said that high potency vitamins can give you diahrea if you have a sensitive gut. She said to look for a regular vitamin, not one that exceeds the daily requirement as we can only absorb so much anyway. BTW, for anyone living in the Portland, Me. area I found a very good dietician. Her name is Joan Herzog, she writes an article on nutrition every Wed. in the Portland Press Herald and has quite a insight on the celiac diet. Janet in Maine