Mevacor is a brand name for the drug lovastatin, which is used to lower cholesterol levels in the blood. There are many other synonyms for this drug, including Altoprev, Advicor, Aztatin, Flexistat, Livalo, Lescol, and Lipitor. These drugs work by inhibiting the production of cholesterol in the liver, which helps to reduce the levels of LDL or "bad" cholesterol in the bloodstream. While they are all slightly different in terms of the way they work, they are all used to treat the same condition and can be effective in managing high cholesterol. Patients should always speak to their doctor about which medication is right for them, as there can be different side effects and interactions depending on the individual.