Flexable Chewables 60 wafers. Flexable Chewables Glucosamine and Chondroitin by Amerifit. Flexable Chewables include natural ingredients that help promote healthy joints, tissue and flexibility.* Each great tasting, convenient chewable wafer provides 750 mg of glucosamine, plus 600 mg of chondroitin sulfate complex. Now with vitamin C!