Farnam MaxFlex XR Extended Release Joint Formula, 0.9375-Pounds 1.2 Lb., Maxflex Xr Extended Release Joint Formula Easy To Use Powder, That Comes In A 30 Day Supply Container Scientifically Formulated To Provide 24 Hour Joint Care Extended Release Glucosamine Releases Slowly Over Time, Providing A Constant Supply Of Available Glucosamine To The Joints 1 Daily Dose Keeps Glucosamine In Your Horse's System A Full 24 Hours