Calycanthine, the principal alkaloid of the order Calycanthaceae, has been isolated from a species of the genus Psychotria, and is a central nervous system toxin, causing convulsions[1][2].
[1]. AdjibadÉ Y, et al. Action of calycanthine on nervous transmission in cockroach central nervous system. Planta Med. 1991 Apr;57(2):99-101. [2]. Numan RW, et al. Wintersweet (Chimonanthus praecox) toxicity in four goats. N Z Vet J. 2016 May;64(3):179-81.
















