Physicians' Academy for Cardiovascular Education

Statin-related adverse events a nocebo effect?

Adverse events associated with unblinded, but not with blinded, statin therapy in the Anglo-Scandinavian Cardiac Outcomes Trial—Lipid-Lowering Arm (ASCOT-LLA): a randomised double-blind placebo-controlled trial and its non-randomised non-blind extension phase

Literature - Gupta A, Thompson D, Whitehouse A, et al. - The Lancet 2017, Epub ahead of print

Main results


In the blinded randomized phase of the ASCOT-LLA trial, the number of muscle-related AEs were comparable between statin-treated and placebo-treated patients. However, these AEs were significantly more often reported when these same patients knew that they were taking a statin during the extended non-blinded non-randomized phase. This observation is consistent with a nocebo effect, whereby subjective AEs are probably a result of a treatment thought that causes some particular side-effects. These data suggest that muscle-related AEOIs are not causally related to statin-use and therefore, the benefits of statins in reducing cardiovascular events should override concerns about reports of side-effects.


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Find this article online at The Lancet

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