Toxicity of comfrey
Winship, K.A.
Adverse Drug Reactions and Toxicological Reviews 10(1): 47-59
1991
ISSN/ISBN: 0964-198X PMID: 1878443 Document Number: 200
Comfrey is a fast-growing leafy perennial, widely grown as a garden herb and less often as a green feed for farm animals.1'2 It is widely consumed by humans as a medicinal herb, as a salad plant, and as a herbal infusion or tea. In view of an increasing popularity of herbal remedies worldwide the potential toxicity of comfrey should be more widely known.
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