Lipid-lowering drugs, especially HMGCoA reductase inhibitors, are widely used in the treatment and prevention of cardiovascular disease. They are generally well tolerated. The main, but uncommon, adverse effects of statins are myopathy and an increase in hepatic transaminases. This review focuses on concerns surrounding the safety of lipid-lowering therapy as it affects liver function. Asymptomatic statin-associated elevations in aminotransferases are common and doserelated, but they are not indicative of liver damage. Liver injury attributable to lipid-lowering therapies is very uncommon. Routine monitoring of liver function is not supported by the available evidence but is still recommended by the FDA. Decompensated cirrhosis, acute liver failure and significant cholestasis are contraindications for statin therapy, but not compensated chronic liver disease such as non-alcoholic fatty liver disease. Possible interactions (mainly with CYP3A4 inhibitors) deserve particular attention, and when statin therapy is needed the lowest effective dose should be prescribed in adults at risk for liver problems.