I use Recovery EQ, mostly for preventative treatment because Bob is 18 and competing mid level eventing. Its supposed to help aging horses fight tissue breakdown, and its an anti-inflamatory which helps his heaves as well. I cant say for sure whether there is a difference in him until we start showing again, because he has never shows signs of arthritis or anything. It being -18C today, he will be stiff from the cold and general standing around, and his breathing is all over the place in the winter because he is stabled at night.