<<Disclaimer: Verify this information before applying it to your situation.>> Dear Listmates - I called Twinlab after a listmate posted a message that Doctor's Trust says Tri Boron Plus has gluten. I had reported that Doctor's Trust had a great price on this product. Doctor's Trust is not the manufacturer. TwinLab is. So I called TwinLab. It is gluten-free. No gluten. One listmate reported a substantial bone density increase with this product (and exercise, of course). However, Tri Boron Plus contains a good bit of Betaine Hydrochloride - i.e. to increase stomach acid. I find that irritating to my stomach, so I searched the archives for our email list. The postings from last year on Betaine Hydrochloride indicated that taking pepsin (not Pepcid) with Betaine Hydrochloride is helpful. I couldn't find any plain pepsin, but I found Solaray Comfree Pepsin and Algin, This is a different product than plain Solaray Comfree. "Pepsin and Algin" appear in small letters under the words Solaray Comfree, on the bottle. I called Solaray, and Solaray Comfree - Pepsin and Algin is gluten-free. Vicki in Homewood, IL *Support summarization of posts, reply to the SENDER not the CELIAC List*