Timed analgesic effects by butabital, acetaminophen and caffeine in combination in mice and rats~1 / 中国临床药理学与治疗学

Aim To observe the timed analgesic effects by butabital (B), acetaminophen(A) and caffeine (C) in combination (BAC), in which the proportion was fixed as1. 25∶ 8. 1∶1. Method Three types of experimental methods, including the tailflicking method, the hot plate method and the pressurizing tail method, weretaken to determine indices at different times after the animals were adminstered(ig) high, median and low BAC dose. Results and conclusion BAC had a stronganalgesic effect in three types of experiments. The effect began 30 min after ad-ministration, arrived maximum at 1 h, decreased at 2 h and disappeared at 4 h.There was a dose-effect relationship between large and little BAC dose.