23-O-β-D-Glucopyranosyl-20-isoveratramine is a potential anti-allergic agent extracted from nettles. A variety of COX-1, COX-2, 5-lipoxygenase and trypsin-like inhibitors and H1 antagonists are found in nettle extract, which can inhibit seasonal allergies, allergic rhinitis and other inflammatory diseases. and preventive effects^[1].