Nevadensin (Lysionotin), a natural flavonoid, is a selective human carboxylesterase 1 (hCE1) inhibitor with an IC50 of 2.64 µM. Nevadensin is more selective for hCE1 than hCE2 (IC50 of 132.8 µM). Nevadensin can induce apoptosis and DNA damage in cancer cells. Nevadensin has a variety of pharmacological effects such as anti-inflammatory, anti-tumour, anti-hypertensive, anti-tubercular, antitussive, antioxidant and anti-microbial activities[1][2][3][4][5].