Overview

Comfrey is a plant. Even though this plant contains poisonous chemicals called pyrrolizidine alkaloids (PAs), some people use the leaf, root, and root-like stem (rhizome) to make medicine.

Despite safety concerns, comfrey is used by mouth for stomach ulcers, heavy menstrual periods, diarrhea, bloody urine, cough, bronchitis, cancer, and chest pain (angina). It is also used as a gargle for gum disease and sore throat.

Comfrey is applied to the skin for ulcers, wounds, muscle soreness, bruises, rheumatoid arthritis, varicose veins, gout, and fractures.

How does it work ?

The chemicals in comfrey might have wound healing effects and reduce inflammation when applied to the skin. However, comfrey contains toxic chemicals that can be absorbed through the skin.

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