Rheum palmatum

Rheum palmatum                            Common name:  Turkey rhubarb
Family: Polygonaceae

Parts used:  Rhizome

Medicinal actions:  Astringent, aperient, sialogogue

Constituents:  Anthraquinone glycosides including emodin, tannins, stilbene derivatives, volatile oil, rutin, fatty acids, calcium oxalate.

Medicinal use:  Rheum palmatum is used for its laxative effects. Rheum is indicated in atonic constipation or diarrhea secondary to lack of tone.  Rheum has an antiseptic action.

Pharmacy: Rhubarb powder: 0.5-5g/day. Decoction: 1 tsp/cup; 1 cup TID. Tincture (1:5) up to 6 ml/day; 40 ml/week max.

Toxicity:  Diarrhea with mild griping; icterus and hepatic enlargement; renal insufficiency and proteinuria.


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