Utilizing pharmacogenomic testing to ensure effective therapy

Some medications are administered as prodrugs that need to be metabolized in the active form by the body. An example of such a drug is codeine. It undergoes biotransformation into morphine by CYP2D6. Patients who transform codeine faster who are referred to as ultrarapid metabolizers, transform codeine into morphine so fast that they can develop opioid toxicity. On the other hand, poor metabolizers would not be able to produce enough active moiety, thereby making the drug ineffective. One such example

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