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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.
Blood Thinner has been reported by people with depression, high blood pressure, high blood cholesterol, birth control, deep venous thrombosis. (latest reports from 3,149 Blood Thinner patients). On Sep, 23, 2015: 77,617 people reported to have side effects when taking Simvastatin.lood Thinner has been reported by people with depression, high blood pressure, high blood cholesterol, birth control, deep venous thrombosis. (latest reports from 3,149 Blood Thinner patients). On Sep, 23, 2015: 77,617 people reported to have side effects when taking Simvastatin.