Rhubarb Extract Rhubarb extract powder is a natural chinese rhubarb supplement made from the roots and stems of Rheum Palmatum L., a flowering plant in the Polygonaceae knotweed family. It has been used in traditional medicine for millennia to treat a number of health concerns.This extract is rich in antioxidant compounds and is also considered a good source of ascorbic acid and vitamins.Today, rhubarb root extract is gaining popularity as a natural way to improve overall health and wellness. Get your natural rhapontic rhubarb root extract from ace, one of the most reputable rhubarb extract manufacturers and rhubarb extract suppliers in China. Basic Information of ACE Biotechnology Rhubarb Extract Product Name: Rhubarb Extract Used plant part: Root î?· Appearance: Fine yellowish brown to brown powder î©? Active Ingredients: Hydroxyanthracene Application: Dietary Supplement Certification and Qualification: Non-GMO, Vegan, HALAL, KOSHER. If you want to buy rhubarb extract, please contact us. We can also offer kinds of Fenugreek Extract for sale, if you are interested, please leave us a message.