For a very simple, drug free, method of dealing with trauma (and a host of other negative emotional issues) look at this web site: www.emofree.com

There is a free downloadable manual available and lots of examples of issues that it has been successfully used on (with about an 80% success rate)

The technique is called EFT and has been used to deal with severe cases of trauma - you don't forget the incident but it no longer carries the emotional charge associated with it.

It is well worth a try :-)