It is cooling and drying, an astringent and a bitter digestive tonic. It is used to relieve stress, headaches and anxiety, depression as well as a sleeping aid. Vervain added to wine around Samhain aids in connecting with ancestor spirits.
Vervain is a nervine, anti-spasmodic, sedative, diaphoretic, hepatic, alterative, galactogogue, aphrodisiac, emmenagogue, thymoleptic, vulnerary, hypotensive, anti-bacterial. It is still used as a febrifuge for autumn fevers.