what is slippery elm

{"title":"Insomnia Treatment Slippery Elm Bark Extract With Best Price","imgUrl":"https:\/\/img.chinax.com\/nimg\/fa\/d6\/ddf81a770b9361defa20802288e8-200x200-1.jpg","attrs":{"Price":"US$16\/kg","Brand Name":"complex","Model Number":"BGH-377","Minimum Order Quantity":"1kg","Delivery Time":"3 workdays after payment","Certification":"ISO9001\/Halal\/Kosher","Place of Origin":"china","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"5000000kg per year","Packaging Details":"1kg 5kg 25kg two plastic bag inside,aluminum foil bag or drum outside","Type":"Herbal Extract","Variety":"slippery elm bark extract","Form":"Powder","Part":"bark","Packaging":"Drum","Place of origin":"Shaanxi,China(Mainland)","Key word":"slippery elm bark extract","Color":"light yellow to brown powder","Water soluble":"good water soluble"}}