Rosuvastatin (marketed by AstraZeneca as Crestor) 10 mg tablets. Rosuvastatin, marketed as Crestor, is a member of the drug class of statins, used in combination with exercise, diet, and weight-loss to treat high cholesterol and related conditions, and to prevent cardiovascular disease.It was developed by Shionogi.he primary use of rosuvastatin is for the treatment of dyslipidemia. It is recommended to be used only after other measures such as diet, exercise, and weight reduction have not improved cholesterol levels.