| Papaverine also induces a light sleep since it slows the heart rate while narcotine has a depressant action and is also used as a hypnotic drug. |
| Central to the pro-trade argument was the dubious claim that narcotine, the active agent in opium, functioned as a preventive and curative treatment for malaria. |
| Papaverine, laudanosine, narcotine, and narceine are four other alkaloids found in opium. |
| Commercial morphia and its preparations are often contaminated with codeine, narcotine, and colouring matter. |
| Meconin may be prepared by treating narcotine with nitric acid. |
| The solubility of free narcotine in water is extremely small. |
