(Corta Flx) 99% pure glucosamine HCl to help lubricate the joints and maintain healthy cartilage. Each scoop provides 14,000 mg glucosamine HCl. For average horses, feed 1 scoop daily for 14 days, followed by 1/2 scoop daily for maintenance. May feed 2 scoops daily for 3 days prior to strenuous exercise or event. Powder.