What is "scoulerine"

Scoulerine, also known as discretamine and aequaline, is a benzylisoquinoline alkaloid that derives from reticuline and is a precursor of berberine. It is found in many plants, including Opium poppy, Croton flavens, and certain plants in the Erythrina genus. Studies show that scoulerine is an antagonist at the α- adrenoceptor, α- adrenoceptor and 5-HT receptor. It has also been found to be a GABA receptor agonist.