Glucosamine is a precursor and component of GAGs, e.g. chondroitin, hyaluronic acid. It will last two months at maintenance rate to help support the joints of healthy horses. Also likely to benefit are horses subject to repeated wear and tear e.g. the elderly or those working on poor surfaces.
Used this product years ago on an old mare and it gave her a new lease of life.
Currently feeding it to my new horse with ongoing unsoundness and once again it’s proved to be a winner. She has more sound days now than not, I wouldn’t entertain using any other supplement. This one works!