noscapine(redirected from l-alpha-narcotine)
Also found in: Dictionary, Encyclopedia.
an alkaloid present in opium; used as a nonaddictive antitussive.
An isoquinoline alkaloid, occurring in opium, with papaverinelike action on smooth muscle; suppresses the cough reflex and this is used as an antitussive; it does not appear to cause addiction.
A nonnarcotic alkaloid obtained from the opium poppy, C22H23NO7, that has antitussive and antitumor properties and has been used as a cough suppressant.