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efficacy of opioids for chronic pain

opioid pain medications

Study:  Efficacy of opioids versus placebo in chronic pain: a systematic review and meta-analysis of enriched enrolment randomized withdrawal trials

This meta-analysis of FDA-required double-blind, randomized, placebo-controlled clinical trials of opioid analgesics for the treatment of chronic pain has shown that there is an ample evidence base supporting the efficacy of opioid analgesics for at least 3 months’ duration, a standard period for the evaluation of treatments for chronic pain and other chronic disorders