Effects of aluminium hydroxide on restraint-induced and restraint delay-induced gastric ulceration in rats.

Rats given aluminium hydroxide after cold-restraint stress but before the 'post-stress delay' period, ulcerated significantly less severely and less frequently than rats given the drug before cold-restraint stress or those given water at either time period. Both aluminium hydroxide treated groups exhibited less ulceration than non-drug groups. These data suggest profound parasympathetic and hence, gastric acid, involvement in restraint delay-induced ulceration in rats.