Noscapine (also known as Narcotine, Nectodon, Nospen, and Anarcotine)'s a benzylisoquinoline alkaloid from plants of the Papaveraceae family, without significant painkilling properties. This agent's primarily used for its antitussive (cough-suppressing) effects. It's also been shown to have anticancer activity. Structure analysis Naturally it occurs as the alpha enantiomer. It can be converted into the beta enantiomer when it's dissolved in alkaline water-ethanol solutions. The lactone ring's u… (More on Noscapine)