Meclofenoxate hydrochloride, an ester of dimethylethanolamine (DMAE) and 4-chlorophenoxyacetic acid (pCPA), has been shown to improve memory, have a mentally stimulating effect, and improve general cognition.IC50 value: Target: nootropicMeclofenoxate, administered in a dose of 50 mg/kg twice daily for 7 days using the maze-training method, increased the number of responses to the conditioned stimulus, when retention tests were made 24 hours and 7 days after training, whereas citicholine, applied in the same way in a dose of 10 mg/kg, shortened the latency of the responses with reinforcement during the training and increased the number of correct responses to the conditioned stimulus in retention tests 7 days after the training [1]. Meclofenoxate appears to increase the consolidation of new information into long-term memory, but does not affect other aspects of remembering [2].

References:
[1]. Mosharrof AH, et al. Effects of meclofenoxate and citicholine on learning and memory in aged rats. Acta Physiol Pharmacol Bulg. 1987;13(4):17-24.
[2]. Marcer D, et al. The differential effects of meclofenoxate on memory loss in the elderly. Age Ageing. 1977 May;6(2):123-31.