Buckeye

A deciduous tree, the bark or fruit of which contains coumarins, flavonoids, saponins, tannins; it is believed to be anti-inflammatory; it is administered as an extract or decoction for arthritis, haemorrhoids, varicose veins, and to stimulate circulation; it is used topically for muscle pain and cramps
Toxicity HCs are poisonous, and may be fatal in children