Originally Posted by Horsesaplenty
Thats what I thought and i'd read a little about withdrawel times with certain substances. I also use it for maintainance on three of my horses.
It has never let me down, so I don't want to quit using it. I have an Arabian gelding who turned 18 in Feb and he has been getting MSM his whole life and has been doing Endurance since he was 6. He is still going strong, no joint problems, no injections. He also gets a glucosamine shot once a month. He actually just finished a 50 mile ride in 3rd place this past weekend. He would have given 1st place a run for her money, but as he has gotten older he does not do as well in the heat as the youngsters anymore.