This is a woody vine that grows throughout the United States and also in the eastern world. The parts used in medicine are the roots and twigs, which should be collected in the months of August and September.

Medical properties and uses. -- It is an alterative in particular, at the same time acting as a diuretic and a diaphoretic. In large doses, like Vervain, it will produce vomiting, but when properly given is a fine remedy for syphilis, all forms of skin diseases, scrofula and glandular swellings. It acts as a fine blood purifier, causing the organs of excretion to throw off the dross of the blood, and at the same time prompting the organs of digestion to make new and pure natural material for the constant refitting of the house made of flesh and bone. Dose of the tincture, from a half to a teaspoonful four times a day.