Self heal has a long history of folk use, especially in the treatment of wounds, ulcers, sores etc. It was also taken internally as a tea in the treatment of fevers, diarrhoea, sore mouth, internal bleeding etc. In Korea it is used to treat oedema, nephritis, scrofula and goitre. The whole plant is alterative, antibacterial, antipyretic, antiseptic, antispasmodic, astringent, carminative, diuretic, febrifuge, hypotensive, stomachic, styptic, tonic, vermifuge and vulnerary. It has an antibacterial action, inhibiting the growth of Pseudomonas, Bacillus typhi, E. coli, Mycobacterium tuberculi etc. It can be used fresh or dried, for drying it is best harvested in mid-summer. The plant is experimentally antibiotic and hypotensive. Source: https://pfaf.org/
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