Comfrey Tea (Knitbone)


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Comfrey (Knitbone)

Symphytum officinale

Bath, poultice, compress

Nutritive tonic, emollient, demulcent, vulnerary, relaxing expectorant, astringent, haemostatic, stimulant to fibroblast, chondroblast and osteoblast activity.

Wounds, ulcers, strains, bone fractures, bruises, sprains, athlete’s foot, varicose ulcers, gastric ulcers & mastitis

This is a powerful herb. Research suggests that internal use for more than 3 weeks should be avoided.



Comfrey is a perennial herb with a black, turnip-like root and large, hairy broad leaves that bears small bell-shaped flowers of various colours. It is native to Europe, growing in damp, grassy places. It is frequently found throughout Ireland and Britain on river-banks and ditches. Medicinal use of comfrey dates back to Ancient Greece.


Comfrey can be used externally as a bath, poultice or compress: for an impressive local healing agent for wounds, slow-healing ulcers; strains and bone fractures, bruises, sprains, athlete’s foot, varicose ulcers & mastitis (due variously to mixture of binding mucilage-tannin mixture, and the highly diffusible stimulant of connective tissue, bone and cartilage – allantoin). It can also be drunk as a tea for ulceration and erosion of the gut wall and for bronchial conditions. Comfrey can be taken internally for healing gastric & duodenal ulcers but ONLY under the supervision of a professionally trained herbalist as healing can take place too quickly, trapping infections.


The presence of hepatotoxic pyrrolizidine alkaloids has raised doubts over the safety of this remedy; such doubts may be ill-founded, especially for the leaves, but to be safe it is better that excessive internal consumption – for more than three weeks, be avoided.

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