Couachi contains lactones, the main one being quassin, which is known to be febrifuge and depurative; however, the external application of couachi (quassia amara) can be extremely effective against macaque worms (worms whose larvae are born in living tissues and feed on them), but also in the treatment of irritations caused by the female butterfly responsible for butterfly disease. Burns can be treated with couachi oil. The bitter principle of couachi will then diffuse, treating the bronchi. Be careful, however, couachi should not remain in contact with the skin for more than a day if you want to use it as a repellent.
