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For mild-to-moderate pain, weak opioids such as tramadol, tapentadol, and codeine can be given in combination with nonopioid analgesics. We recommend morphine as the opioid of first choice for moderate-to-severe cancer pain.The Indian Society for Study of Pain (ISSP), Cancer Pain Special Interest Group (SIG) guidelines, for the diagnosis and assessment of cancer pain in adults provide a structured, step-wise approach which will help to improve the management of cancer pain and to provide the patients with a minimally acceptable quali