Wahoo improves digestion and should be used in combination with other bitter tonics, such as gentian, golden seal, etc. It is an anti-periodic, and is very useful in counteracting malaria. It is a fine substitute for quinine, and will answer in the place of it in a great many cases. Make the tincture as directed with other barks. To break chills, take a teaspoonful every two hours before time for the chill.