How do pain killer works?
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Painkillers work to alter these messages, which can take place in the brain, the spinal cord or the site of the injury. In general, painkillers can be made from either aspirin or opiates, and painkillers derived from opiateswork in a way that's similar to opium
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Painkillers interfere with pain messages sent to the brain via nerve endings, which affects the brain, spinal cord or injured area. NSAIDs work by blocking the creation of prostaglandins by special enzymes Cox-1 and Cox-2.
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