A double-blind study of the effects of meclofenoxate on memory performance of fit, able, elderly subjects was carried out. A number of performance measures, designed to measure various aspects of mamory function were employed. These revealed that meclofenoxate appears to increase the consolidation of new information into long-term memory, but does not affect other aspects of remembering. It was plso found that significantly more of the subjects receiving meclofenoxate reported an increased level of mental alertness.