I chose this product for my retired OTTB at the age of 18 after having his shoes taken off. He was really struggling, understandably so, he had probably had shoes on since a 2 year old! After about 10 days on Biotin 15, he really started to walk much better. My farrier can't believe how well he is coping without shoes and how good his feet are! We are now on our 2nd purchase - I have started my old Anglo Arab 21 and young Warmblood 5 on it. Great for all round overall health. Highly reccomend