DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with them first.

This drug should not be used with the following medications because very serious (possibly fatal) interactions may occur: drugs to treat erectile dysfunction (such as sildenafil, tadalafil, vardenafil).

If you are currently using any of these medications, tell your doctor or pharmacist before starting nitroglycerin.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: rosiglitazone, certain drugs to treat migraine headaches (ergot alkaloids such as ergotamine), drugs that lower blood pressure (including alpha blockers such as tamsulosin).

This medication may interfere with certain laboratory tests (including blood cholesterol levels), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.

This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US National Poison Hotline at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: slow heartbeat, vision changes, severe nausea/vomiting, sweating, cold/clammy skin, bluish fingers/toes/lips.

NOTES: Do not share this medication with others.

MISSED DOSE: Not applicable.

STORAGE: Store at room temperature at 68-77 degrees F (20-25 degrees C) away from light, heat, and moisture. Do not store in the bathroom. Keep in the original glass bottle with the cap tightly closed. Ask your pharmacist how long this medication will continue to work properly after the bottle is opened for the first time. Keep all medicines away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.

MEDICAL ALERT: Your condition can cause complications in a medical emergency. For information about enrolling in MedicAlert, call 1-800-854-1166 (USA) or 1-800-668-1507 (Canada).

Information last revised September 2011. Copyright(c) 2011 First Databank, Inc.