Nitroglycerin is in a group of drugs called nitrates. Nitroglycerin dilates (widens) blood vessels, making it easier for blood to flow through them and easier for the heart to pump. Nitroglycerin transdermal (skin patch) is used to prevent attacks of chest pain (angina). This medicine will not treat an angina attack that has already begun. Nitroglycerin transdermal may also be used for purposes not listed in this medication guide.
Minitran is a drug that belongs to a class of medications known as Antianginal agents or vasodilators. Minitran is used for treating chronic angina or chest pains that are triggered by heart disease. This medication widens or relaxes the blood vessels allowing blood to flow through them easily.