<<Disclaimer: Verify this information before applying it to your situation.>> Thank you for all your responses. Levothyroxine is gluten free. However many of you also got sick and reacted when you switched form Synthroid to Levothyroxine. 6 had similar problems, cramps and frequent bowel movements. 6 had no problem at all with Levothyroxine. Several of you said it was illiegal for an inspaance company to change you from a brand name to a generic without you doctor's approval. One person suggested that I pay for the brand name since synthroid is an inexpensive drug. I've decided to do just that. Thank you for all your help. I greatly appreciate it. Lorraine *Please provide references to back up claims of a product being GF or not GF*