Tell your doctor if you have had a heart attack; congestive heart failure; low blood pressure; a stroke, a transient ischemic attack (TIA, or mini-stroke),a serious head injury; anemia; glaucoma; suffer from migraines; or liver disease. You may not be able to take nitroglycerin, or you may require a dosage adjustment or special monitoring during therapy.

Do not use sildenafil (Viagra), a drug used to treat impotence, while taking nitroglycerin without first talking to your doctor. The combination could cause severe or life-threatening low blood pressure.

Nitroglycerin is in the FDA pregnancy category C. This means that it is not known whether nitroglycerin will be harmful to an unborn baby. Do not take this medication without first talking to your doctor if you are pregnant or could become pregnant during treatment.

It is not known whether nitroglycerin passes into breast milk. Do not take nitroglycerin without first talking to your doctor if you are breast-feeding a baby.

Use caution when driving, operating machinery, or performing other hazardous activities. Also, stand up slowly from a sitting or lying position. Nitroglycerin may cause dizziness. If you experience dizziness, avoid hazardous activities.

Avoid alcohol. It also widens blood vessels and may cause dizziness, drowsiness, and low blood pressure. It could be dangerous to combine alcohol with nitroglycerin.

 

FDA Information

Why is this medication prescribed?

Other uses for this medicine

Dosage and using this medicine

What should I do if I forget a dose?

What side effects can this medication cause?

What storage conditions are needed for this medicine?

In case of an emergency/overdose