Common use

Imdur belongs to nitrates. Effects of its active substance, Isosorbide mononitrate, consist in dilatation of (widening) of blood vessels and making it easier for the heart to pump. Imdur is used in treatment of angina attacks (chest pain).

Dosage and direction

Take Imdur exactly as prescribed by your doctor. Try to rest or stay seated when you take this medicine (may cause dizziness or fainting). Do not crush, chew, or break an extended-release Imdur tablet. Swallow it whole.

Precautions

To make sure Imdur is safe for you, tell your doctor if you have: congestive heart failure; kidney disease; or low blood pressure.

Contraindications

You should not use Imdur if: you are allergic to isosorbide mononitrate, isosorbide dinitrate, or nitroglycerin; or you have early signs of a heart attack (chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating).
Seek emergency medical attention if you have early symptoms of a heart attack (chest pain or pressure, pain spreading to your jaw or shoulder, sweating, general ill feeling).
Do not stop taking this medicine suddenly. Stopping suddenly could cause a severe angina attack.

Possible side effect

Get emergency medical help if you have signs of an allergic reaction to Imdur: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have: a light-headed feeling, like you might pass out; worsening angina pain; fast or slow heart rate; or pounding heartbeats or fluttering in your chest.
Imdur can cause severe headaches. These headaches may gradually become less severe as you continue to use nitroglycerin. Do not stop taking this medicine to avoid headaches. Ask your doctor before using any headache pain medication.
Common Imdur side effects may include: headache; or flushing (warmth, redness, or tingly feeling).

Drug interaction

You should not take erectile dysfunction medicine (Viagra, Cialis, Levitra, Stendra, Staxyn, sildenafil, avanafil, tadalafil, vardenafil) while you are taking Imdur. Taking these medicines together can cause a sudden and serious decrease in blood pressure.

Missed dose

If you forgot to take your dose in time, please do it as soon as you remember. But do not take if it is too late or almost time for your next dose. Do not take double doses of Imdur. Take your usually dose next day in the same regularly time.

Overdose

Overdose symptoms may include a severe throbbing headache, fever, confusion, severe dizziness, fast or pounding heartbeats, vision problems, nausea, vomiting, stomach pain, bloody diarrhea, trouble breathing, sweating, cold or clammy skin, fainting, and seizure (convulsions). Seek emergency medical attention.

Storage

Store at room temperature between 20-25 C (68-77 F), away from moisture, heat, and light. Keep the bottle tightly closed when not in use.