What is the generic name for the brand name Imdur?

The generic name for the brand name Imdur is Isosorbide Mononitrate. This medication belongs to a class of drugs known as nitrates, which are used primarily to prevent chest pain (angina) related to heart conditions. Isosorbide Mononitrate works by relaxing and widening blood vessels, which reduces the heart's workload and improves the flow of blood and oxygen to the heart.

In the context of the options provided, the other medications listed do not correspond to the brand name Imdur. Labetalol is an alpha- and beta-blocker used for high blood pressure, Hydrochlorothiazide is a thiazide diuretic primarily used to treat hypertension and fluid retention, and Metoprolol is a selective beta-1 blocker used for heart-related issues and hypertension. Since Imdur specifically indicates the use of Isosorbide Mononitrate for angina prevention, it aligns perfectly as the correct generic name.