AniMed's Vita-Calm is a feed supplement containing l-Tryptophan, Thiamine, Calcium and Magnesium for horses and/or where supplementation of l-Tryptophan, Thiamine, Calcium and Magnesium may prevent a dietary deficiency. Yea-Sacc 1026 supplies a source of live, naturally occurring beneficial micro-organisms for healthy digestion and gut stability.