isosorbide mononitrate er 30 mg

3 min read 18-03-2025

Meta Description: Learn about Isosorbide Mononitrate ER 30 mg: its uses, dosage, side effects, precautions, and potential drug interactions. This comprehensive guide provides essential information for patients and healthcare professionals. Understand how this medication works to manage angina and improve your heart health.

What is Isosorbide Mononitrate ER 30 mg?

Isosorbide mononitrate ER 30 mg is a medication used to treat angina (chest pain) caused by coronary artery disease. The "ER" stands for extended-release, meaning the medication is designed to release its active ingredient slowly over an extended period. This 30mg dosage provides a sustained therapeutic effect, reducing the frequency of angina attacks. It's a vasodilator, meaning it widens blood vessels, improving blood flow to the heart.

How Does Isosorbide Mononitrate ER 30 mg Work?

Isosorbide mononitrate works by relaxing the blood vessels. This relaxation reduces the workload on the heart, lowering blood pressure and improving blood flow to the heart muscle. By reducing the heart's workload, it minimizes the oxygen demand, thereby preventing or alleviating angina episodes. The extended-release formulation ensures consistent blood levels, providing sustained relief throughout the day.

Uses of Isosorbide Mononitrate ER 30 mg

The primary use of isosorbide mononitrate ER 30 mg is the long-term prevention of angina attacks. It's prescribed for patients with chronic stable angina, meaning chest pain that occurs predictably during physical exertion or stress. This medication is not intended for immediate relief of an angina attack; other medications like nitroglycerin are used for that purpose.

Who Should Use Isosorbide Mononitrate ER 30 mg?

This medication is prescribed by a doctor for individuals diagnosed with angina. The doctor will consider individual health factors and other medications to determine the appropriate dosage and suitability of isosorbide mononitrate ER 30mg.

Dosage and Administration of Isosorbide Mononitrate ER 30 mg

The dosage of isosorbide mononitrate ER 30 mg is determined by a physician based on individual needs and response. It's typically taken once or twice daily, usually at the same time(s) each day. It's crucial to follow your doctor's instructions precisely. Never adjust your dosage without consulting your doctor.

How to Take Isosorbide Mononitrate ER 30 mg

Swallow the tablet whole: Do not crush, chew, or break the extended-release tablet. Doing so can lead to rapid release of the medication and potential side effects.
Take with food or milk: This can help minimize stomach upset.
Maintain a consistent schedule: Take the medication at the same time(s) each day to maintain consistent blood levels.

Side Effects of Isosorbide Mononitrate ER 30 mg

Like all medications, isosorbide mononitrate ER 30 mg can cause side effects. Common side effects include:

Headache
Dizziness
Lightheadedness
Flushing
Nausea
Orthostatic hypotension (sudden drop in blood pressure upon standing)

Less common but more serious side effects include:

Severe hypotension
Allergic reactions (rash, hives, swelling)

If you experience any serious side effects, seek immediate medical attention.

Precautions and Warnings

Hypotension: This medication can cause a significant drop in blood pressure. Be cautious when changing positions from lying down to standing.
Headache: Headaches are common. Over-the-counter pain relievers may help, but persistent or severe headaches should be reported to your doctor.
Alcohol: Avoid excessive alcohol consumption, as it can worsen the hypotensive effects.
Driving: Avoid driving or operating machinery until you know how this medication affects you.
Pregnancy and breastfeeding: Consult your doctor before using this medication if you are pregnant or breastfeeding.

Drug Interactions

Isosorbide mononitrate can interact with other medications, including:

Other nitrates: Combining isosorbide mononitrate with other nitrates (e.g., nitroglycerin) can significantly lower blood pressure.
PDE5 inhibitors: These medications (used for erectile dysfunction) can cause dangerously low blood pressure when combined with isosorbide mononitrate.
Alcohol: Alcohol can enhance the hypotensive effects of isosorbide mononitrate.

Always inform your doctor of all medications, supplements, and herbal remedies you are taking.

Q: What Should I Do if I Miss a Dose of Isosorbide Mononitrate ER 30 mg?

A: If you miss a dose, take it as soon as you remember, unless it's almost time for your next dose. Never double the dose to make up for a missed one.

Q: Can I Stop Taking Isosorbide Mononitrate ER 30 mg Suddenly?

A: No, you should not stop taking isosorbide mononitrate ER 30 mg suddenly. Abrupt cessation can lead to rebound angina. Your doctor should gradually reduce your dosage before completely stopping the medication.

Conclusion

Isosorbide mononitrate ER 30 mg is an effective medication for preventing angina attacks in patients with coronary artery disease. However, it's crucial to understand its potential side effects, precautions, and drug interactions. Always follow your doctor's instructions carefully and report any concerning symptoms immediately. This information is for general knowledge and does not replace professional medical advice. Consult your physician for personalized guidance on the use of isosorbide mononitrate ER 30 mg or any other medication.