Do not take more than the recommended dose without checking with your doctor. Report any unexplained muscle pain, tenderness, or weakness to your doctor right away, especially if you also have a fever or general body discomfort. Lab tests, including blood cholesterol levels, liver function tests, and creatine phosphokinase (cpk) blood levels, may be performed while you use mevacor. These tests may be used to monitor your condition or check click the following article for side effects. Be sure to keep all doctor and lab appointments. Use mevacor with caution in the elderly; They may be more sensitive to its effects, especially serious muscle problems. Mevacor should be used with extreme caution in children younger 10 years and in those who have not reached puberty; Safety and effectiveness in these children have not been confirmed.