Slippery elm (Ulmus rubra) is a tree that is native to North America. Only the inner bark of slippery elm, not the whole bark, is used as a supplement. The inner bark contains chemicals that can increase mucous secretion, which might be helpful for stomach, digestion and intestinal problems.
Slippery elm bark powder is often recommended for pets to support digestion issues. Slippery Elm available from Now Foods in capsules or high quality bemo powder!