I have used this at a very low dose for my two mares-both easy keepers-and the one always seemed to be "in heat". Both are 16 going on 17. One I just took on last year-and she was on the brink of complete metabolic melt down-a huge cresty neck, bubbles of butt fat, hard layers of fat everywhere-but thankfully-not laminitic-yet. I feed her plenty-and she has access (limited in the spring/summer) to native grass pasture of poor quality. Her spunk is amazing-and without extra exercise etc. She has shed probably 200 pounds-has a normal neck for her breed, is soft to touch and has no extra fat. For a cob cross-pretty amazing! The other has more regular heat cycles, and also displays less tendancy to metabolic fat deposition. They each get one small scoop (a full teaspoon?) a day in their beet p...