Rhubarb Root

Rhubarb can be used as a strong laxative. Its roots have been used as a laxative for at least 5,000 years.[10] Rhubarb has an astringent effect on the mucous membranes of the mouth and the nasal cavity.[11]

The roots and stems are rich in anthraquinones, such as emodin and rhein. These substances are cathartic and laxative, which explains the sporadic use of rhubarb as a dieting aid.

Rhubarb roots are used in traditional Chinese medicine; rhubarb also appears in medieval Arabic and European prescriptions.[12][13]

The rhizomes (‘roots’) contain stilbenoid compounds (including rhaponticin) which seem to lower blood glucose levels in diabetic mice.[14]

{Information courtesy Wikipedia}