Slippery elm, derived from the inner bark of the ulmus rubra tree, is available in extract, powder, and capsule forms. it's traditionally used to soothe digestive issues, coughs, and sore throats due to its mucilaginous properties, which form a soothing gel when mixed with water. while generally considered safe, it's important to consult a healthcare professional before using slippery elm, especially if pregnant, breastfeeding, or taking other medications. powder. extract 1kg-2400 500g-1250 250g