Rosumax contains Rosuvastatin Calcium 10 mg, a statin medication used to lower cholesterol and triglycerides in the blood. It works by inhibiting the HMG-CoA reductase enzyme, which plays a key role in cholesterol production in the liver. This helps reduce the risk of cardiovascular diseases like heart attacks and strokes by lowering LDL (bad cholesterol) and increasing HDL (good cholesterol).