Which of the following is used for the management of high cholesterol levels?

Crestor, known generically as rosuvastatin, is a medication that falls under the category of statins. It is specifically designed to lower lipid levels, primarily by reducing the amount of cholesterol and triglycerides in the blood. Statins work by inhibiting an enzyme in the liver responsible for cholesterol production, which effectively helps manage high cholesterol levels and reduces the risk of heart disease.

In contrast, the other medications listed have different primary uses. Calan, or verapamil, is primarily used to treat high blood pressure and certain heart conditions, but it doesn't have a role in cholesterol management. Cozaar (losartan) is an angiotensin receptor blocker (ARB) used to treat high blood pressure and kidney disease in patients with diabetes. Diovan (valsartan) is also an ARB and is primarily indicated for hypertension treatment and heart failure management. Thus, while all these medications play essential roles in cardiovascular health, Crestor is specifically targeted towards managing high cholesterol levels.