DNA Testing for "Correct" Drug Usage

I had a DNA test done by my psychiatrist and had variations in four genes. Two genes marked me for depression two marked me for other dangerous things. One was vulnerability to euphoric effects of drugs of abuse and the second was the possibility of weight gain with one of my drugs, risperdal.  What the test was for was to find our what medications would best suit me. Fortunately the psychiatrist had already put me on the drugs that the findings of the test suggested. This test was done with saliva and sent to a lab in PA. Web address genomind.com