The results of the clinical trial, Effect of Ezetimibe Plus Simvastatin Versus Simvastatin Alone on Atherosclerosis in the Carotid Artery (ENHANCE), is creating a controversy among cardiologists. The antiatherogenic drug, Vytorin, was found to be inefficient in decreasing the levels of low-density lipoprotein in the body. Some physicians questioned whether the medication should now be in use; others in the cardiology community urged caution in overinterpreting the results, larger trials due for completion in a few years should better answer efficacy and safety questions.