A powerful vegetable alkaloid, found, associated with strychnine, in the seeds of different species of Strychnos, especially in the Nux vomica. It is less powerful than strychnine. Called also brucia and brucina.

a bitter alkaloid poison resembling strychnine and extracted from nux vomica

Brucine is a bitter alkaloid closely related to strychnine. It can be found in some plant species, the most well-known variety being the Strychnos nux-vomica tree, found in South-East Asia.