A Narcotic analgesic is a drug used in the treatment of pain that acts on specific receptors within the CNS. Drugs in this classification include codeine (a moderately potent analgesic) and morphine (a potent one).
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... early 20th centuries, a period that also saw Brazil industrialise and further expand into its interior. Brazil became a dictatorship in 1937 under Getulio Vargas, ...