Increase of Hexobarbital Sleeping Time by Certain Anticholinesterases.

Abstract
The anticholinesterases OMPA, EPN, malathion, chlorothion and phostex increased hexobarbital sleeping time in mice 2 to 4 times, while BFP and TEPP were ineffective. TEPP hastened the onset of action of barbital while chlorothion did not. Anticholinesterases which are rapidly metabolized by the liver may complete for enzymes which are responsible for the destruction of hexobarbital.