Nitro TD Patch-A (transdermal)

Nitro TD Patch-A (skin patch) is used to prevent chest pain (angina) attacks. Nitro TD Patch-A will not treat an angina attack that has already started.

Nitro TD Patch-A may also be used for reasons not mentioned in this medication guide.

You should not use Nitro TD Patch-A if you are allergic to any type of adhesive found in bandages or other transdermal skin patches, or if you are taking medicine for pulmonary arterial hypertension, such as riociguat.

Do not take erectile dysfunction medicine (Viagra, Cialis, and others) while using Nitro TD Patch-A, as it could cause a sudden and serious drop in blood pressure.

You should not use Nitro TD Patch-A if you are allergic to it, or if you have:

• an allergy to any type of adhesive on a bandage or other transdermal skin patch; or
• if you are using medicine to treat pulmonary arterial hypertension, such as riociguat.

Do not take erectile dysfunction medicine (Viagra, Cialis, Levitra, Stendra, Staxyn, sildenafil, avanafil, tadalafil, vardenafil) while you are using Nitro TD Patch-A. Using erectile dysfunction medicine with this medicine can cause a sudden and serious decrease in blood pressure.

Tell your doctor if you have ever had:

• a heart attack or other heart problems;
• a stroke or head injury; or
• low blood pressure.

Tell your doctor if you are pregnant or breastfeeding.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Nitro TD Patch-A may cause serious side effects. Call your doctor right away if you have:

• worsening chest pain;
• pounding heartbeats or fluttering in your chest;
• slow heart rate;
• a light-headed feeling, as if you might pass out; or
• heart attack symptoms--chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating.

Serious side effects may be more likely in older adults.

Nitro TD Patch-A can cause severe headaches. These headaches may gradually become less severe as you keep using this medicine. Do not stop using this medicine. Ask your doctor before using any headache pain medication.

Common side effects of Nitro TD Patch-A may include:

• headache; or
• feeling light-headed.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.

Read and carefully follow any Instructions for Use provided with your medicine. Ask your doctor or pharmacist if you do not understand these instructions.

Wash your hands after applying or removing a skin patch.

Do not wear more than one Nitro TD Patch-A patch at a time. Using extra skin patches will not make the medication more effective. Never cut a skin patch.

The Nitro TD Patch-A skin patch is usually worn for 12 to 14 hours and then removed. A new patch is put on after a "patch-free" period of 10 to 12 hours. Your doctor may want you to wear the patch for longer or shorter periods of time. Follow your doctor's instructions carefully.

You may have very low blood pressure while using Nitro TD Patch-A. Call your doctor if you are sick with vomiting or diarrhea, or if you are sweating more than usual.

Nitro TD Patch-A will not work fast enough to treat an angina attack. Your doctor may prescribe a fast-acting medicine to treat an angina attack. Tell your doctor if it seems like any of your medicines don't work as well in treating or preventing angina attacks.

If you need surgery or medical tests, tell the surgeon or doctor ahead of time that you are using Nitro TD Patch-A.

Do not stop using this medicine without your doctor's advice, even if you feel fine. You may have increased angina attacks if you stop using the medication suddenly.

Store at room temperature, away from moisture and heat. Do not refrigerate. Keep each skin patch in its sealed pouch until you are ready to use it.

After removing a skin patch fold it in half, sticky side in, and throw it away in a place where children or pets cannot get to it. Keep both used and unused Nitro TD Patch-A skin patches out of the reach of children or pets.

Apply a patch as soon as you remember, and keep it on for the rest of your wearing time without changing when you remove the patch. If it is almost time for your next scheduled dose, skip the missed dose. Do not use extra patches to make up for the missed dose.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. The amount of Nitro TD Patch-A in a used skin patch could be dangerous to a child or pet who accidentally chews on the patch.

Overdose symptoms may include a severe throbbing headache, confusion, fever, fast or pounding heartbeats, dizziness, vision problems, vomiting, bloody diarrhea, trouble breathing, cold or clammy skin, fainting, and seizures.

Avoid getting up too fast from a sitting or lying position, or you may feel dizzy.

Drinking alcohol can increase certain side effects such as dizziness, drowsiness, feeling light-headed, or fainting.

Tell your doctor about all the medicines you are currently taking, especially:

• aspirin, heparin;
• medicines used to treat blood clots;
• blood pressure medications; or
• ergot medicines--dihydroergotamine, ergotamine, ergonovine, methylergonovine.

This list is not complete, and many other drugs may interact with Nitro TD Patch-A. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are mentioned here.