Can be eaten raw or boiled, best harvested mid summer.
As understood from the name the plant has healing properties, it is thought to pull out splinters and glass.
Self Heal Tea
Mix self heal and plantain with boiling water and leave for flavours to infuse before drinking.
References:http://www.elflightessence.co.uk/userimages/selfheal.jpg
Mother Earth Herbal by Shatoiya De LA Tour