I was diagnosed with Celiac Disease and have been gluten free for a year. No cheating but a few accidental ingestions of hidden gluten, so for the most part I am doing pretty well in my gut. My problem is that I have always been pretty physically active, not a triathelete but weight train and ride a mountain bike regularly, and my endurance and stamina are way lower than before the onset of my gluten problems. After I began taking liquid vitamins by Innovative natural products, and as long as I take them religiously I do ok. But if I miss a day I can tell the difference. It's like I have a gas tank that's just above the empty mark and I'm refilling it with only enough fuel for another mile. My doctors has checked out my heart which is fine, but he is not familar with celiac disease. Another md. diagnosed me. Is there tests for vitamins which we are not getting enough of? Since the liquid vitamins are helping, I'm assuming that I'm not getting enough of something. I also see a lot of mention of avoiding caffiene, why is that. I eat goat cheese but nothing from cows. Thank you for your help.