Zocor 20mg is a prescription medication containing simvastatin, manufactured by MSD. Each package contains 28 tablets with 20mg strength per tablet. This medication belongs to a class of drugs known as statins. Zocor is a branded medication from MSD (Merck Sharp & Dohme) with simvastatin as the active ingredient. The product comes in a box containing 28 tablets, with each tablet containing 20mg of simvastatin. As this is a prescription medication, it should only be taken under the direction and supervision of a healthcare provider.