<<Disclaimer: Verify this information before applying it to your situation.>> Hi friends, I contacted Nature's Way re the nature of the caramel in Ginkgold (ginkgo bilboa). Heather Macdonald (800-926-8883, extension 642) informed me that the source of this caramel comes from corn. Everything else in this product is gf. I called because I've been experiencing diahrea for the past few months, and I was at my wit's end locating for its source, and checking out every label whether it's gf. I've checked into soy, corn, dairy, potatoes, nuts, etc with no or little avail. I've just started taking Imodium, one dose of which seems to relieve the symptoms for the time being. Wanted you to know about the caramel source of Ginkgold. Mildred Oberkotter, California