I recently inquired about UHU stics - those standard yellow tube glue sticks I always remember having in my house growing up. Although they're made by a German company they were very quick to respond...Here is my inquiry:
Hello, my son has celiac disease and cannot consume anything that contains gluten (wheat, rye, oats or barley) or anything that has come into contact with gluten. Since he is very young we also have to check for the presence of gluten in his craft supplies, including glue. Could you please tell me whether the UHU stic (glue stick) contains any gluten ingredients or could be cross contaminated with gluten? This information would be very helpful to me.
And their response:
thank you for your request. We can confirm, that none of our products contains gluten. We hope that we could help you with this answer. If you have further questions, don't hesitate to contact us again.