Monkshood (Aconitum Ferox), is known to be the strongest poisonous plant of the Himalayas, having said that, Monkshood, is part of some Ayurvedic medicines and preparations as Mahamrutynjaya rasa, contain Aconitum Ferox, Piper nibrum and Piper longum, containing aconitine and piperine .
Most of the Ayurvedic formulations containing Vatsanabha (Aconitum Ferox), were traditionally prescribed as an analgesic, anti-rheumatic, appetizer and digestive .
The active constituent giving Monkshood this poisonous property is Pseudaconitine, an alkaloid discovered in 1878 by Wright and Luff  also known as nepaline (C36H51NO12) that is found in high quantities in the roots of Aconitum Ferox also known as wolfsbane and it is "extremely poisonous" . Image: Monkshood and Monkeyflower by Zabet O'Casey under Creative Commons License (CC BY 2.0).
Common name: Monkshood, Vatsanabha