Slippery Elm (Ulmus rubra) is a tree native to North America, whose inner bark is used in herbal medicine. When mixed with water, it forms a mucilaginous paste, traditionally used to soothe irritated mucous membranes, particularly in the digestive tract. It is often used to relieve symptoms of acid reflux and indigestion by forming a protective 'raft'.
Well, one simple thing to do, and anyone can do this, and you don't need to go very far, is to use what we call the raft principle. So, there are some plants that have got a lot of mucus in them, mucelage. The classic example from North America, Sri Elm, it's a sort of powder that looks like you make polyfiller to fill the crack with, you know, it's a white powder.
""Dr. Simon Mills introduces 'Sri Elm' (Slippery Elm) as a 'classic example' of a plant used for the 'raft principle' to combat acid reflux. He describes its form as a powder that creates a mucous paste, clearly identifying it as a specific herbal product for a medical condition."