"Through analysis of the human genome, Basle scientists have identified molecules and compounds that are related to human memory. In a subsequent pharmacological study with one of the identified compounds, the scientists found a drug-induced reduction of aversive memory. This could have implications for the treatment of posttraumatic stress disorder, which is characterized by intrusive traumatic memories. The findings have been published in the latest edition of the magazine PNAS...."
:Surprisingly, the said compound is a known antihistamine [diphenhydramine aka Benadryl]. A single dose of the drug led to significant reduction of memory recall of previously seen aversive pictures; however, it did not affect memory of neutral or positive pictures. These findings could have implications for the treatment of posttraumatic stress disorder...."
http://medicalxpress.com/news/2013-10-drug-negative-memory.html
Papassotiropoulos, et al. (2013). "Human genome–guided identification of memory-modulating drugs." PNAS. Full Text.
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