Why You're Failing at amino acid blend for horses
https://horse-feed-options640.scriblorax.com/posts/running-out-of-stamina-mid-ride-7-ways-hoveler-pur.muskel-helps
For a metabolically sensitive horse, each ration ingredient earns scrutiny, and Pur.Muskel keeps its list simple: no added vitamins or minerals, and no alfalfa. That clarity makes it easy to slot into a complete ration at 50–80 g per 220 lb in medium work