Isoferulic acid (Hesperetic acid, Hesperetate, Isoferulate), a major active ingredient of Cimicifuga heracleifolia, shows anti-inflammatory, antiviral, antioxidant, and antidiabetic properties. Isoferulic acid (3-Hydroxy-4-methoxycinnamic acid) is a cinnamic acid derivative that has antidiabetic activity. Isoferulic acid binds to and activates α1-adrenergic receptors (IC50=1.4 µM) to enhance secretion of β-endorphin (EC50=52.2 nM) and increase glucose use.