Good luck! There is quite a learning curve to a gluten free diet, because gluten lurks in places you might never suspect. If you look through the Favorite Links page in The Gluten File you will find some 'Safe Food Lists" that are kept by other forums or celiac support groups. A gluten free diet needs to be 100% strict to work, and that can be a learning process.

I've ordered my supplements from many different online stores and have had good luck with all of them. I've tried just about every methylcobalamin brand on the market, and while I don't have a great preference, I usually buy Jarrow Brand.
http://www.iherb.com/Search.aspx?c=1&kw=methylcobalamin

Jarrow also has a B-complex that uses P5P form of B6 called B-Right. So does Country Life~ http://www.iherb.com/ProductDetails....&pid=1760&at=0


Good luck to you . Keeping a food diary is a good idea. Keep in mind that 50% of those with celiac disease or gluten sensitivity also have casein sensitivity (cow's milk protein). It can be a process to rid yourself of GI symptoms, but getting rid of gluten is a good first step! I hope you see some improvements quickly, because that can be very motivating.

Cara