Sold by the bag, fresh from Jamaica, blue vervain is used for sore throats and respiratory tract diseases such as asthma and whooping cough, and for heart conditions such as chest pain (angina) and fluid retention due to heart failure.

It is also used for depression, hysteria, generalized seizure, gallbladder pain, arthritis, gout, metabolic disorders, “iron-poor blood” (anemia), fever, and recovery after fever.

Other uses include treatment of pain, spasms, exhaustion, nervous conditions, digestive disorders, liver and gallbladder diseases, jaundice, and kidney and lower urinary tract disorders.

Women use vervain for treating symptoms of menopause, irregular menstruation, and increasing milk flow, if breast-feeding.