[Pharmacodynamics of benzodiazepines]

The properties of benzodiazepines are reviewed in animal. If the benzodiazepines have qualitatively the same effects, there are however some quantitative differences; in humans, benzodiazepines are likely to have pharmacodynamic effects quantitatively different. In these conditions, and facing the difficulty to prove, at the present time, such differences, the choice of a benzodiazepine must be made in view of its therapeutic efficacy in the indication concerned and in view of pharmacokinetics.