Rosuvastatin is a prescription medication used to treat high cholesterol and prevent heart attacks and strokes. It belongs to a class of drugs called statins and comes as a tablet or a capsule. Learn how to take it, who should not take it, and what to tell your doctor before taking it. Learn about Rosuvastatin uses , dosage , side effects, food interactions, and more. Get all the details about Rosuvastatin from MedicinesFAQ. Rosuvastatin is used with diet, exercise, and weight loss for prevention of heart attack and stroke. Learn about its uses , side effects, dosage , precautions, and more. Rosuvastatin ( Crestor ) is used to treat several types of high cholesterol and to prevent heart disease. Learn about side effects, warnings, dosage , and more.