Thompsons slippery elm slippery elm bark powder 100g thompsons pure slippery elm powder comes from the inner bark of the north american red elm tree it is dried and then finely ground to a powder texture the mucilaginous consistency of slippery elm is gentle on the digestive system providing a smooth protective coating to the wall of the stomach and intestines ideal to take when recovering from illness a varied and balanced diet and healthy lifestyle are important ingredients contains l