According to this AP story, researchers at McGill University in Montreal are trying to devolop a pill that would reduce the trauma of painful events.
This is great in theory, but who does not see the hundreds of potential abuses of this medication? A rapist could give it to his victim as soon as the rape is over to cloud their memory of their attacker. A murderer could take it after the event to fool a lie detector. People could start taking it recreationally, and if so, what are the effects of numerous modified memories?
Just because science can do something, doesn’t mean they should. The brain is a delicate and complicated machine, it’s not exactly something you should just throw medication at and “modify”.