Laurotetanine is an alkaloid isolated from the leaves of Peumus boldus and other plants. It was demonstrated that laurotetanine from Beilschmiedia species possess an anti-acetylcholinesterase (AChE), anti-α-glucosidase, anti-leishmanial and anti-fungal activities. Laurotetanine exhibits antiplasmodial activity and good antioxidant activities also. It relaxed the rat thoracic aorta mainly by suppressing the Ca2+ influx through both voltage- and receptor-operated calcium channels. It showed significant anti-tumor metastatic activities.