We describe a case of a geriatric patient with repeated hepatotoxicity after (re)start of atorvastatin. We also noticed an increased effect, a fast decline of LDL-cholesterol, after intake of atorvastatin. The intake of rosuvastatin or low dose lovastatin was not associated with hepatotoxicity. Multiple hypotheses were investigated and applied on the case. Genetic testing of statin transporters and CYP-enzymes and medication interactions could not explain the hepatotoxicity.