<<Disclaimer: Verify this information before applying it to your situation.>> Hello! I received a few responses. It was split in half, three people said Citrucel had Gluten in it and three people said it was safe. I did get a few responses that they use Metamucil. Myself, I am not going to use Citrucel. I was feeling terrible the last couple of days and I'm pretty sure it was because of the Citrucel. Thanks to all who responded! Stacey