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Opiates are a class of drugs that are derivatives (in the broadest sense of the word) of opium. These include basically two groups of alkaloids: phenanthrenes and papaverines. Opiates in the narrower sense of the word are only the phenanthrenes.


Naturally occurring in opium:

Semisynthetic derivatives:

Fully synthetic:


  • Methadone
  • levomethadyl acetate hydrochloride (LAAM)


A high number of opiates are considered to be highly addictive.

See also nootropics