alder buckthorn(redirected from R purshiana)
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alder buckthornA deciduous shrub, the bark of which contains anthraquinones; it has laxative activity and has been used internally by herbalists for constipation, and topically for minor cuts.
Toxicity Prolonged use may evoke a “lazy bowel” syndrome; it should not be used in patients with colitis, haemorrhoids, or gastric ulcers, or in pregnancy or during nursing.
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