| abstract |
A method of treating pain, e.g., acute post-operative pain, by intravenously administering to a human patient(s) a dose of tramadol of about 45 mg to about 80 mg, based on tramadol hydrochloride, together with an intravenous dose of acetaminophen in an amount from about 500 mg to about 1000 mg, about every 6 hours. |