Mevacor (Lovastatin) is a cholesterol- lowering medicine. Tablet LOVASTATIN Possible Uses of This Medication Lovastatin is an enzyme blocker (HMG-CoA reductase inhibitor), also known as a "statin". More info... Before using Before taking lovastatin, tell your doctor or pharmacist if you are allergic to it; or to other "statins"; or if you have any other allergies. More info... How to take this medication Take this medication by mouth usually once daily with your evening meal, or as directed by your doctor. Some patients may require twice daily dosing. More info... Cautions If you are being treated for any disease that contributes to increased blood cholesterol, such as hypothyroidism, diabetes, nephrotic syndrome (kidney and blood vessel disorder), dysproteinemia (an excess of protein in the blood), or liver disease, your doctor will closely monitor your reaction to Mevacor. More info... Possible side effects Constipation or stomach pain may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly. More info... Drug interactions See also the How To Use section. This drug should not be used with the following medications because very serious, possibly fatal interactions may occur: More info... Missed Dose If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up. Storage Store between 41 and 86 degrees F (5 to 30 degrees C) away from light and moisture. Do not store in the bathroom. Keep all medicines away from children and pets. Other Information Do not share this medication with others. Laboratory and/or medical tests (e.g., blood cholesterol levels, liver function tests) should be performed periodically to monitor your progress or check for side effects. More info...