Overview
Isosorbide Mononitrate is a nitrate / antianginal medication. Common brand names may include Imdur and Monoket when listed on medication profile or pharmacy label. This medication may be ordered to help prevent angina or chest pain related to Coronary Artery Disease when prescribed.
DailyMed lists Isosorbide Mononitrate extended-release tablets as indicated for prevention of angina pectoris due to Coronary Artery Disease and states onset of action is not rapid enough to abort an acute anginal episode. [1] MedlinePlus also states Isosorbide can only be used to prevent angina and cannot be used to treat an episode of angina once it has started. [1]
For home health nurses, Isosorbide Mononitrate indication and home health teaching often focuses on angina prevention teaching, chest pain reporting, following patient-specific chest pain action plan, Blood Pressure-related dizziness precautions, headache and side effect reporting, medication compliance, fall prevention, medication interaction safety, refill planning, and when to notify PCP or call 911.
Isosorbide Mononitrate helps manage symptoms as ordered, but it does not cure underlying Coronary Artery Disease. Patient-specific indication, provider order, medication profile, discharge instructions, pharmacy label, cardiology instructions if applicable, and clarified PCP/provider instruction should always be verified before choosing indication wording or teaching focus.
Medication Quick Information
| Item | Information |
|---|---|
| Generic name | Isosorbide Mononitrate |
| Common brand name(s) | Imdur, Monoket |
| Drug classification | Nitrate / Antianginal |
| Common home health teaching focus | Angina prevention teaching, chest pain reporting, Blood Pressure-related dizziness precautions, headache and side effect reporting, medication compliance, fall prevention, medication interaction safety, refill planning, and when to notify PCP or call 911. |
Common Indications for Isosorbide Mononitrate
Common indications may include:
- Angina prevention due to Coronary Artery Disease.
- Chronic stable angina management when prescribed.
- Chest pain prevention related to Coronary Artery Disease when ordered.
- Provider-ordered antianginal therapy for angina prevention.
This medication may be ordered to help prevent angina or chest pain related to Coronary Artery Disease when prescribed. Isosorbide Mononitrate helps manage symptoms as ordered, but it does not cure underlying Coronary Artery Disease. [1]
Do not describe Isosorbide Mononitrate as a medication used to stop sudden chest pain once it has started. Do not replace patient-specific nitroglycerin instructions or emergency chest pain instructions. Heart failure should not be used as an indication unless provider order specifically documents Isosorbide Mononitrate for that patient-specific reason.
Short EMR Indication Options
Verify patient-specific reason before use. The examples below are possible short indication options. Select only the indication that matches the patient’s diagnosis, provider order, medication profile, discharge instructions, pharmacy label, or clarified PCP/provider instruction.
| Patient diagnosis / reason | Short EMR indication option |
|---|---|
| Angina | Angina prevention |
| Angina / chest pain prevention | Angina / chest pain prevention |
| Chronic stable angina | Chronic stable angina |
| Coronary Artery Disease with angina | CAD / angina prevention |
| Coronary Artery Disease with chest pain symptoms | CAD / chest pain prevention |
| Chest pain prevention related to CAD | Chest pain prevention |
| Provider-ordered antianginal therapy for angina | Antianginal / angina prevention |
| Provider-ordered chest pain prevention | Chest pain prevention as ordered |
Home Health Teaching Focus
For home health nursing, Isosorbide Mononitrate teaching often focuses on taking medication exactly as ordered, not stopping or changing medication unless instructed by PCP/provider, understanding that this medication is generally used to help prevent angina symptoms as ordered, and knowing it is not a replacement for emergency chest pain instructions.
Teaching should reinforce patient-specific chest pain action plan, nitroglycerin instructions if separately ordered, emergency instructions, dizziness and fall precautions, medication interaction safety, headache reporting, refill planning, and keeping updated medication list.
Patients may need reinforcement if they have a new Isosorbide Mononitrate order, angina, Coronary Artery Disease, chest pain history, recent Hospital stay, dizziness, weakness, fall risk, low Blood Pressure-type symptoms, severe headaches, medication confusion, missed doses, refill problems, medication interaction concerns, poor teach-back, or PCG involvement.
Patient Teaching Points for Isosorbide Mononitrate
Basic teaching may include:
- Take Isosorbide Mononitrate exactly as ordered by PCP/provider and pharmacy label.
- Do not stop, skip, hold, take extra, or change medication unless instructed by PCP/provider.
- This medication is commonly used to help prevent angina or chest pain symptoms as ordered. It is not a replacement for emergency chest pain instructions.
- Follow PCP/cardiology instructions for chest pain, nitroglycerin use if ordered, and when to call 911.
- Report dizziness, lightheadedness, fainting, weakness, worsening chest pain, severe headache, shortness of breath, or symptoms that are not improving.
- Change positions slowly and use fall precautions if dizzy or weak.
- Keep updated medication list and tell PCP/pharmacist about all prescription medications, OTC medications, supplements, and herbal products.
- Ask PCP/pharmacist before taking any new medication if not already reviewed.
- Refill medication before it runs out.
- Ask PCP or pharmacist if medication purpose, schedule, or safety instructions are unclear.
Possible Side Effects or Concerns to Report
Possible concerns may include:
- headache
- dizziness
- lightheadedness
- weakness
- fainting or near-fainting
- nausea
- flushing
- low Blood Pressure-type symptoms if instructed to monitor or if symptomatic
- worsening chest pain
- shortness of breath
- rash, hives, itching, swelling, trouble breathing, or allergic-type symptoms
- symptoms getting worse or not improving
MedlinePlus notes Isosorbide may cause dizziness, lightheadedness, and fainting, especially with position changes, and lists nausea, worsening chest pain, rash, hives, itching, and difficulty breathing or swallowing as symptoms to report. [1] DailyMed notes severe hypotension can occur, especially with upright posture, and light-headedness on standing may occur with Isosorbide Mononitrate. [1]
When to Notify PCP
Call PCP/cardiology or follow agency/provider instructions if patient has:
- chest pain episodes happening more often, lasting longer, or becoming more severe
- dizziness or lightheadedness
- fainting or near-fainting
- weakness or unusual fatigue
- headache that is severe, persistent, or concerning
- medication confusion or missed doses
- refill problems
- side effects that continue or worsen
- Blood Pressure concerns if monitoring was ordered
- patient or PCG unsure how to follow chest pain action plan
- patient or PCG unsure how to take medication safely
- new prescription medication, OTC medication, supplement, herbal product, erectile dysfunction medication, pulmonary hypertension medication, or alcohol-use concern
MedlinePlus advises patients to discuss current or planned medications with doctor and pharmacist before starting, stopping, or changing medications while taking Isosorbide. [1] DailyMed notes vasodilating effects may be additive with other vasodilators and alcohol, and reports marked symptomatic orthostatic hypotension when calcium channel blockers and organic nitrates were used together. [1]
When to Call 911
Call 911 or get emergency help right away for:
- chest pain or chest pressure that is severe, new, worsening, or not relieved by patient-specific emergency plan
- severe shortness of breath
- fainting or unresponsiveness
- severe confusion
- stroke-like symptoms such as face drooping, arm weakness, trouble speaking, sudden confusion, sudden vision change, or one-sided weakness
- severe weakness with trouble responding
- severe allergic reaction symptoms, such as swelling of face, lips, tongue, or throat, or trouble breathing
- symptoms rapidly worsening
- any severe or life-threatening symptoms
Do not provide emergency treatment instructions beyond calling 911 for emergency symptoms and following provider-specific emergency plan.
Related Home Health Teaching Resources
You may also find these resources helpful:
- Medication Safety Resource Pack for Home Health Nurses
- Emergency Signs and Escalation Pack for Home Health Nurses
- Blood Pressure Teaching Resource Pack
- Fall Prevention Teaching Pack for Home Health Nurses
- Blood Pressure Teaching in Home Health: 10 Areas Nurses Should Cover Across the Episode
- Nitroglycerin Indication and Home Health Teaching
- Metoprolol Indication and Home Health Teaching
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Important Use Note
This post is for educational and home health documentation support only. It does not replace provider orders, medication profile, pharmacy guidance, discharge instructions, cardiology instructions, agency policy, payer requirements, or skilled nursing judgment. Medication use, indication, monitoring needs, chest pain instructions, and reporting instructions should be individualized to patient condition, provider order, plan of care, agency policy, and clinical judgment. This content does not guarantee payment, claim approval, survey compliance, or regulatory compliance.
This post does not provide dosing advice, universal Blood Pressure parameters, medication adjustment instructions, chest pain treatment instructions, nitroglycerin instructions, or emergency treatment instructions beyond calling 911 for emergency symptoms and following patient-specific emergency plan.
Sources Used for Medication Information
- DailyMed / FDA prescribing label for Isosorbide Mononitrate extended-release tablets, including nitrate / antianginal use, angina prevention indication, acute anginal episode limitation, hypotension precautions, headache information, interaction information, and patient counseling information. [1]
- DailyMed / FDA prescribing label for Isosorbide Mononitrate tablets, including riociguat contraindication and additive vasodilator interaction information. [1]
- MedlinePlus medication information for Isosorbide, including angina prevention use, inability to treat an angina episode once started, dizziness/fall precautions, medication interaction reminders, side effects, storage reminders, and emergency guidance. [1]
- Patient-specific use should always be verified with provider order, medication profile, discharge instructions, pharmacy label, agency policy, and clinical judgment.
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