Chlordiazepoxide and stress tolerance in rats.

Intraperitoneal injections of chlordiazepoxide in rats attenuated the severity of stomach ulcers induced by a single restraint session. However, when the drug was withheld during the last session of a series of repeated restraint treatments, stomach erosions developed in the animals. Vehicle-controls, on the other hand, had adapted to the chronic stress, as indexed by a decline in gastric pathology. The results were discussed in reference to stress adaptation and drug withdrawal effects.