what is vinca used for
Lesser Periwinkle or common periwinkle (vinca minor) is most often the species within the periwinkle family that is used for natural medicinal purposes. It is known as an astringent agent and as good for controlling excessive blood flow. In that last roll, it is used to treat wounds and to reduce menstrual flow.
GREATER PERIWINKLE (Vinca major, Linn.) This is the species more generally used in herbal medicine, as an astringent and tonic, in menorrhagia and in haemorrhages, also as a laxative, and gargle. Made into an ointment, useful for piles and inflammatory conditions of the skin. LESSER PERIWINKLE.