<<Disclaimer: Verify this information before applying it to your situation.>> I noticed someone questioning Sorbitol (in Crest toothpaste). I find that I suffer from excess gas when I ingest it and was concerned it was not gf. I called Upsher-Smith and received a letter indicating that all their products including Sorbitol are GF. You can reach them at 800-654-2299. Laurie Levine