Imdur (Isosorbide Mononitrate)
Complete patient guide for uses, dosage, side effects, and safety information
Quick Facts
What Is Imdur Used For?
Imdur is a medication that contains isosorbide mononitrate, used primarily to prevent angina, which is chest pain caused by reduced blood flow to the heart.
Primary Uses
Imdur is used to prevent angina attacks, which can occur due to physical exertion or stress.
How It Works
Imdur works by relaxing blood vessels, allowing more blood and oxygen to reach the heart.
Good to know: Imdur is not addictive.
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How to Take Imdur
It is important to take Imdur exactly as prescribed by your doctor.
Dosage Instructions
Take one Imdur modified release tablet daily at the same time. If instructed by your doctor, you may take two 60mg tablets at once. Swallow the tablets whole with water; do not chew or crush them.
What If You Miss a Dose?
If you forget to take a dose, take it as soon as you remember, unless it is more than eight hours late. In that case, skip the missed dose and resume your regular schedule. Do not double the dose.
Important: Never double the dose if you miss one.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- Headache
- Dizziness
- Fainting
- Fatigue
- Muscle tenderness or weakness
Seek immediate medical attention if you experience:
- Hypotension
- Tachycardia
Important Warnings
There are specific conditions and medications that may prevent you from safely taking Imdur.
Who Should Not Take Imdur
Do not take Imdur if you are allergic to isosorbide mononitrate or any of its ingredients, have low blood pressure, are in shock, have pericarditis, or are taking certain medications like sildenafil, vardenafil, or tadalafil.
Medical Conditions to Discuss
Inform your doctor if you have liver or kidney issues, low blood pressure, or any heart and blood vessel problems.
Pregnancy and Breastfeeding
Do not use Imdur if you are pregnant or breastfeeding unless your doctor advises it is safe.
Elderly Patients With Dementia: Special caution is advised for elderly patients, particularly those with dementia.
Drug Interactions
Certain medications can interact with Imdur and affect its effectiveness.
- Sildenafil (Viagra)
- Vardenafil (Levitra)
- Tadalafil (Cialis)
- Calcium antagonists
Alcohol & Driving
Be cautious with alcohol consumption and operating vehicles while taking Imdur.
Alcohol
Drinking alcohol may increase the risk of dizziness or fainting while on Imdur.
Driving and Operating Machinery
Be careful when driving or using machinery until you know how Imdur affects you, as it may cause dizziness or fainting.
Storage
Store Imdur in a cool, dry place below 30°C, and keep it in the blister pack until it's time to take it.
Overdose Information
If you suspect an overdose, seek immediate medical attention. Symptoms may include severe headache, nausea, and vomiting.
Frequently Asked Questions
Imdur typically starts to work within a few hours, but it is important to take it regularly for optimal effect.
You can take Imdur with food, but it is best to follow your doctor's instructions.
No, Imdur is not considered addictive.
Do not stop taking Imdur abruptly without consulting your doctor, as it may lead to increased angina attacks.
Be cautious with alcohol, as it may increase the risk of dizziness or fainting.
Weight gain is not a commonly reported side effect of Imdur.
Elderly patients should use Imdur with caution, especially those with dementia.
If you miss a dose, take it as soon as you remember unless it is more than eight hours late. Do not double the dose.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.