This review is restricted to those agents which are effective by systemic rather than local action. Thus, there are to be found discussions of chelating agents, narcotic antagonists, anticholinesterase antidotes, cyanide antidotes, fluoroacetate antidotes, bemegride, and agents useful in digitalis, methemoglobin, chlorpromazine, amphetamine, anticoagulant, and bromide pOisonings.