It works by relaxing the blood vessels and increasing the supply of blood and oxygen to the heart while reducing its work load. When used regularly on a long-term basis, this helps prevent angina attacks from occurring. This product is available in the following dosage forms: Patch, Extended Release.

How long does it take for a Nitro patch to work?

How long does it take Nitro-Dur (nitroglycerin patch) to work? After you put on a Nitro-Dur (nitroglycerin patch) patch, it will take about 2 hours for your body to absorb the medication.

How long does a nitroglycerin patch stay in your system?

In healthy volunteers, steady-state plasma concentrations of nitroglycerin are reached by about two hours after application of a patch and are maintained for the duration of wearing the system (observations have been limited to 24 hours).