Genotyping not ready for prime time

Answer

At this time, there is insufficient evidence to support genetic testing for dose optimisation in treatment of psychiatric disorders. 

Inter-individual variability in response to treatment is a major clinical problem because most psychotropic drugs, while equieffective, differ in side effects. 1 

CYP450 enzymes are responsible for metabolising most psychotropic drugs 2 – the highly polymorphic CYP2D6 isoform metabolises up to 25% of common drugs, including psychotropics. 

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