(Corta Flx) Premium Flex-Force Glucosamine 5000 Solution contains 99% pure glucosamine HCl to help lubricate the joints and maintain healthy cartilage. Each ounce provides 5000 mg glucosamine HCl in a homogenized, cherry flavored liquid. For average horses, feed 1 ounce daily, followed by 1/2 ounce daily for maintenance. May feed 2 ounces daily for 3 days prior to strenuous exercise or event. Liquid.