Pseudaconitine, also known as nepaline (C36H51NO12), is an extremely toxic alkaloid found in high quantities in the roots of Aconitum ferox, also known as Indian Monkshood, which belongs to the family Ranunculaceae.

They isolated a highly toxic alkaloid from the roots of the plant Aconitum ferox and called it pseudaconitine.

[2] Inhibition of this enzyme causes a constant stimulation of the postsynaptic membrane by the neurotransmitter which it cannot cancel.

This accumulation of acetylcholine may thus lead to the constant stimulation of the muscles, glands and central nervous system.

Furthermore, it appears the substance in small quantities also causes a tingling effect on the tongue, lips and skin.