Chinese Rhubarb (Rheum palmatum)
Overview
Chinese rhubarb (Rheum palmatum) is a thick-rhizomed perennial, growing up to 10 ft (3 m) tall, with large, palmate leaves and small flowers. Known in Chinese medicine for over 2,000 years, it has a paradoxical effect on the bowels: stimulating in large doses, yet gently astringent and constipating in small doses. The rhizome also aids digestion, helps counter inflammation, and has anti-ulcer and antibacterial actions.
Traditional uses & properties
Laxative & Bitter Tonic: Large doses remedy constipation; small doses ease diarrhea and inflammatory GI conditions. Anti-Inflammatory & Astringent: Beneficial for stomach ulcers, mouth ulcers, and external application on boils or burns. Anthraquinones & Tannins: Provide an irritant/purgative effect while also exerting an astringent action, illustrating complex synergy. Protective: Some studies suggest anticancer potential and broad antibiotic properties, including activity against Helicobacter pylori.
Safety & precautions
Pregnancy & Nursing: Avoid due to its stimulant and potential toxic effects in large doses. Children: Not suitable; can be harsh on digestion. Kidney Stones & Gout: High oxalic acid content can aggravate these conditions.
Habitat
Native to China and Tibet, the plant is cultivated and found in the wild. Seeds are sown in spring, rhizomes are harvested in autumn after 6–10 years of growth once leaves yellow.
Traditionally used for
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