<<Disclaimer: Verify this information before applying it to your situation.>> I contacted San-J a few months ago and they told me they CANNOT GUARANTEE that their wheat-free tamari sauce is gluten-free due to possible cross contamination. I have been using Bragg's liquid amino acids instead because they are gluten-free (not a great replacement, but better than nothing). I just wanted to share this information with the list because I've seen a lot of claims that San-J was gluten-free. Healthy eating. -Jessica NYC