Nitroglycerin

Pronounced: NIGHT-row-GLISS-err-in
Brand names: Nitro-Bid, Nitro-Dur, Nitrolingual Spray, Nitrostat Tablets, Transderm-Nitro

Why is Nitroglycerin prescribed?

Nitroglycerin is prescribed to prevent and treat angina pectoris (suffocating chest pain). This condition occurs when the coronary arteries become constricted and are not able to carry sufficient oxygen to the heart muscle. Nitroglycerin is thought to improve oxygen flow by relaxing the walls of arteries and veins, thus allowing them to dilate.

Nitroglycerin is used in different forms. As a patch or ointment, nitroglycerin may be applied to the skin. The patch and the ointment are for prevention of chest pain.

Swallowing nitroglycerin in capsule or tablet form also helps to prevent chest pain from occurring.

In the form of sublingual (held under the tongue) or buccal (held in the cheek) tablets, or in oral spray (sprayed on or under the tongue), nitroglycerin helps relieve chest pain that has already occurred. The spray can also prevent anginal pain. The type of nitroglycerin you use will depend on your condition.

Most important fact about Nitroglycerin

Nitroglycerin may cause severe low blood pressure (possibly marked by dizziness or light-headedness), especially if you are in an upright position or have just gotten up from sitting or lying down. You may also find your heart rate slowing and your chest pain increasing. People taking diuretic medication, or who have low systolic blood pressure (less than 90 mm Hg) should use nitroglycerin with caution.

How should you take Nitroglycerin?

Since nitroglycerin is available in many forms, it is crucial for you to follow your doctor's directions for taking the type of nitroglycerin prescribed for you. Never interchange brands.

Ideally, you should take nitroglycerin while sitting down--especially if you feel dizzy or light-headed--so as to avoid a fall.

--If you miss a dose...

If you are using a skin patch or ointment:
Apply it as soon as you remember. If it is almost time for your regular dose, skip the one you missed and go back to your regular schedule. Never apply 2 skin patches at the same time.

If you are taking oral tablets or capsules:
Take the forgotten dose as soon as you remember. However, if it is within 2 hours of your next dose, skip the one you missed and go back to your regular schedule. Never take 2 doses at the same time.