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The trouble is that any such treatment is likely to be pretty toxic and the side-effects more serious than the PTSD they are trying to cure. However, I'd hazard a guess that if the Lacuna Inc name - lacuna means gap or space - is not yet formally registered as a company, it won't be long before some enterprising neurobiotechnologists adopt it and make themselves a tidy living. There are several US companies in the memory drug business, mainly searching for agents that will enhance memory, but their publicists have already been quick to point out that erasure is the flip side of enhancement, and that if they can achieve the one, a quick toss of the pharmacological coin will come up with its opposite.
But I suspect that even leaving the ethical issues to one side, a non-toxic drug is unlikely to have the desired effect. The animal experiments are run in controlled conditions in which both the initial learning experience and its recall are precisely managed by the experimenter. Just how to reactivate the terrors of the multiple experiences of the survivors of a train crash, still less the richness, pain and pleasure of a love affair gone awry beggars imagination. And because the memories concerned are vastly more complex than those involved in a rat anticipating an electric shock, they are going to engage many more neural processes.