* PureFlex * Glucosamine Sulfate Complex * Bone, Joint and Ligament * Dietary Supplement Bluebonnet"s GSX Formula Capsules are highly advanced and formulated for bone, joint and ligament nutritional support. Designed with high potency glucosamine sulfate, chondroitin sulfate from bovine cartilage, sea cucumber, pure vitamin C from L-ascorbic acid , vitamin B6, zinc picolinate and pineapple bromelain. Available in easy-to-swallow vegetable capsules for maximum assimilation and absorption.