[The effect of caffeine on the resorption and various central effects of ethanol].

Caffeine given in a dose of 400 mg one hour before 1 g/kg ethanol did not influence the course of blood alcohol levels in male volunteers. Furthermore, caffeine did not improve psychomotoric skills impaired by ethanol. Two cups of coffee ingested 30 min. after ethanol (0.5 g/kg) caused a statistically significant increase of blood ethanol levels one hour afterwards (from 0.49 to 0.61%). This may be due to an accelerated absorption of ethanol caused by the ingestion of warm fluid.