Morphine and codeine are believed alone to give this reaction.
Other salts of Codeine are not described because used substantially as the above.
Codeine gives the same reaction, but no other of the alkaloids.
Its meythl ester, which can be formed from it, is codeine, one of the accompanying alkaloids of opium.
Commercial morphia and its preparations are often contaminated with codeine, narcotine, and colouring matter.
Codeine should be used with care, and morphine only as a very last resource.
The most important active principles of opium are the alkaloids morphine and codeine.
She forgot to salt David's eggs, and gave him codeine for his cough instead of tonic tablets for his appetite.
The precipitates produced in solutions of narceine and codeine are crystalline and very characteristic.
Ammonia dissolves only traces of morphine; but narceine and codeine readily.