This study will include 10 individuals with statin myalgia on confirmed statin rechallenge (5 assigned to each arm), to be recruited from an ongoing clinical trial in which statin users with suspected statin myalgia (based on clinical history) undergo an observed statin re-challenge to confirm statin myalgia. Confirmation by re-challenge is important, as only about one-third to one-half of those who report a clinical history of statin myalgia demonstrate statin myalgia, confirmed by improvement of symptoms when statin is discontinued and return of symptoms when undergoing an observed statin re-challenge. ii