(indications): this medication is an opioid analgesic, prescribed for moderate to severe pain in adults.it works by changing the way the body senses pain. (contraindications): acute alcoholism, head injuries, severe kidney impairment, breastfeeding, hypersensitivity(dosage):the recommended dose is 50-100 mg (immediate release tablets) every 4-6 hours as needed for pain. the maximum dose is 400 mg/day.iv/im-moderate to severe pain- the recommended dose is 50-100 mg 4-6 hourly.