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I have a 26 year old gelding that had arthroscopic surgery on his ankle joint to repair cartilage in his ankle. It's been a couple years. He is sound on it, but I want to go back to riding him. I would like to know what you would recommend to add to the Performance blend. For sure I will add Ulcer Prevent and the all array/cough, but for his joints I am not sure. 
thanks