Ulmus americana var. rubra (Muhl.) Aiton; U. fulva Michx; U. pendula Willd. Ulmaceae Indian elm; moose elm; red elm; sweet elm Ulmi rubrae cortex Inner bark Slippery elm inner bark is predominantly composed of dietary fibre including celluloses, lignin, mucilage and gums. The mucilage consists of long-chain polysaccharides which combine with water to form a viscous, semi-solid mass, and is regarded as the main active constituent. The polysaccharides are composed of D-galactose, L-rhamnose and D-galacturonic acid and their methylated derivatives and are highly branched. Other constituents include phytosterols, starch, minerals and oleic and palmitic acids (Pengelly and Bennett 2011). No published clinical trials investigating slippery elm, other than in combination with other herbs, have been carried out.
Slippery Elm
Ulmus rubra Muhl.
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