Intramuscular methohexital was used in pediatric anesthesia to carry out special investigations. There seemed to be few side effects but twitches or seizures have been reported. An electroencephalographic study was performed in normal children. The electroencephalogram showed periods of increased amplitude. The authors discussed the problem of side effects following the intramuscular administration of methohexital in the normal child, and prescribed its use in the epileptic.