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Common simvastatin side effects may include: 1  headache; 2  constipation, nausea, stomach pain; or. 3  cold symptoms such as stuffy nose, sneezing, sore throat.
A: Crestor (rosuvastatin) is a statin medication used to treat high cholesterol. The most common side effects with Crestor are muscle pain, constipation and sore throat. Other side effects with Crestor include joint pain, and weakness This is not a complete list of the side effects associated with Crestor.ore serious side effects include problems with muscles and the liver. Symptoms that indicate serious side effects from Crestor include muscle weakness, tenderness, and pain; dark-colored urine; unexplained tiredness; and stomach pain.