Hey! My horse is 13 and per the advice of my vet we put him on SmartFlex Senior since he isn't doing so well and is coming out stiff and sore a lot, always in his hocks. I wanted to put him on something extra to help with the pain for a while with giving him lots of time off with very light riding to see if he gets to feeling better. I stumbled across "horse aspirin" on SmartPak's site, it was $14 a month, and thought it was worth a try. I was just wondering if this is sorta like a bute, but not as strong? I would rather not take the chance of it making him feel reallllly good and then I start riding him again but all it was was the aspirin not making him feel pain, and by riding him made what ever is wrong worse. Thanks!