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ShareAn analgesic (colloquially known as painkillers) is any member of the diverse group of drugs used to relieve pain and to achieve analgesia.
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This derives from Greek an-, "without", and -algia, "pain".
Analgesic drugs act in various ways on the peripheral and central nervous system; they include paracetamol (acetaminophen), the nonsteroidal anti-inflammatory drugs (NSAIDs) such as the salicylates, narcotic drugs such as morphine, synthetic drugs with narcotic properties such as tramadol, and various others.
For more information about the topic Analgesic, read the full article at Wikipedia.org, or see the following related articles:
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