184 posts · Joined 2023. #2 · Jun 30, 2023. I love 100x supplements! I have not used Osteo-Max but I have my horse on Gutx and Joint Flex. Both supplements work well and I can tell they made a difference in my horse. I started my gelding on Joint Flex under two weeks ago. He has arthritis in his hocks, was very hock sore, and was short striding. More @Wikipedia
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