Herb Pharm Rhubarb Liquid Herbal Extract Description. Liquid Herbal Extract. Rheum Palmatum. Decorticated Rhizome And Root. We prepare our Rhubarb Extract from the rhizome and root of Rheum palmatum plants which are cultivated harvested and processed according to traditional Chinese methods. To assure optimal extraction of Rhubarbs bioactive compounds the rootstock is harvested in late autumn or early spring is deprived of its crown rootlets and outer bark is carefully slow-dried and is then thoroughly extracted. Disclaimer These statements have not been evaluated by the FDA. These products are not intended to diagnose treat cure or prevent any disease. Shake well before using. Two or three times per day take 30 to 40 drops in a little water. Ingredients: Certified organic grain alcohol distilled water and rhubarb extractives. Warnings Do not use this product if you have abdominal pain or diarrhea. Seek expert medical advice prior to use during pregnancy or nursing. Do not exceed recommended dose. Not for long-term use.