Abstract: A process for evaluating the genetic sensitivity of individual patients to medications and to appropriately prescribing or not prescribing medication according to established correlations between the genetic sensitivity and the specific medication is described. In the present preferred embodiment/example, this invention provides a process for determining whether a person, having either cardiovascular disease or cardiovascular risk factors, has a genetic characteristic which would indicate whether the ordinarily prescribed statin medication is likely to be effective or even detrimental.