isoloprin 30mg/75mg capsule - Isosorbide Mononitrate (30mg) + Aspirin (75mg) medicine

Monosprin 30 Capsule SR: Complete Medicine Guide

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🏭 Torrent Pharmaceuticals Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 26, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for cardiovascular prevention.
Reviewed by
SaathiMed Expert Panel | Sep 26, 2026
🩺
Medically Fact-Checked & Clinically Verified by SaathiMed Clinical Review Board
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026

When to Call Your Doctor IMMEDIATELY

  • Blood in stool or vomit
  • Severe abdominal pain
  • Chest pain or difficulty breathing
  • Severe headache with visual changes
  • Sudden swelling of face, lips, or throat
  • Yellowing of skin or eyes
  • Decreased urine output

If experiencing severe symptoms, call emergency services immediately.

What is isoloprin 30mg/75mg capsule used for?

This medicine is a combination of Isosorbide Mononitrate and Aspirin used to prevent heart attacks and strokes in patients with cardiovascular disease. It works by relaxing blood vessels and preventing blood clots.

  • Generic Name: Isosorbide Mononitrate (30mg) + Aspirin (75mg)
  • Manufacturer: Torrent Pharmaceuticals Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 isoloprin 30mg/75mg capsule के बारे में (Hindi Summary)

उपयोग: यह दवा मुख्य रूप से हृदय रोगों जैसे एंजाइना (सीने में दर्द), दिल का दौरा और स्ट्रोक को रोकने के लिए इस्तेमाल की जाती है। यह रक्त वाहिकाओं को फैलाकर और रक्त के थक्के बनने से रोककर काम करती है।

साइड इफेक्ट्स: आम दुष्प्रभावों में सिरदर्द, चक्कर आना, चेहरे पर गर्मी लगना और पेट में जलन शामिल हैं। गंभीर दुष्प्रभावों में बहुत कम रक्तचाप, रक्तस्राव, और एलर्जी प्रतिक्रियाएं हो सकती हैं। यदि आपको असामान्य रक्तस्राव, सांस लेने में कठिनाई, या गंभीर सिरदर्द हो तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को डॉक्टर के निर्देशानुसार ही लें। इसे चबाएं या तोड़ें नहीं, पूरा निगल लें। शराब का सेवन न करें क्योंकि इससे रक्तचाप कम हो सकता है और पेट में रक्तस्राव का खतरा बढ़ सकता है। अन्य दवाओं के साथ इसका सेवन करने से पहले डॉक्टर से सलाह लें। नियमित रूप से रक्तचाप और रक्तस्राव के संकेतों की जांच कराएं।

💡 Did You Know? Over 80% of the antiretroviral drugs used globally to combat AIDS are supplied by Indian pharmaceutical companies.

💊 isoloprin 30mg/75mg capsule Uses & Benefits

[{"condition":"Chronic stable angina","description":"Used for the long-term prophylaxis of angina pectoris due to coronary artery disease.","evidence":"Well-established"},{"condition":"Secondary prevention of myocardial infarction","description":"Reduces the risk of recurrent heart attack in patients with a history of myocardial infarction.","evidence":"Well-established"},{"condition":"Secondary prevention of stroke","description":"Helps prevent recurrent ischemic stroke in high-risk patients.","evidence":"Well-established"},{"condition":"Post-coronary artery bypass graft (CABG)","description":"Used to maintain graft patency and prevent thrombotic events after CABG surgery.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Prevention of preeclampsia","description":"Low-dose aspirin is sometimes used off-label to reduce the risk of preeclampsia in high-risk pregnancies; however, the combination with isosorbide mononitrate is not standard.","evidence":"Limited"}]

Primary treatment for: Cardiovascular disease

Also treats: Angina pectoris, Myocardial infarction, Ischemic stroke, Coronary artery disease

📋 Drug Information

Generic Name(s)Isosorbide Mononitrate (30mg) + Aspirin (75mg)
Brand Nameisoloprin 30mg/75mg capsule
ManufacturerTorrent Pharmaceuticals Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassCARDIAC
Action Class
Route of AdministrationOral
StorageStore at room temperature (15-30°C) in a dry place, away from direct sunlight and moisture. Keep out of reach of children.
Shelf Life24 months from the date of manufacture.
WHO GuidelineNot established from the available information.
ICMR GuidelineNot established from the available information.

👨‍⚕️ Doctor's Practical Tips

Evidence-based practical advice from experienced clinicians

1
Take this medicine with food to reduce stomach upset.
2
Do not crush or chew the capsule; swallow it whole.
3
Avoid alcohol while taking this medicine.
4
Monitor your blood pressure regularly.
5
Report any unusual bleeding or bruising immediately.
6
Do not stop this medicine abruptly without consulting your doctor.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Chest pain (angina)
This medicine is commonly prescribed for this.
Likely Use
✅
History of heart attack
Used for secondary prevention.
Likely Use
❌
Fever
This medicine is not a primary fever reducer.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionIsosorbide Mononitrate is rapidly and completely absorbed from the gastrointestinal tract after oral administration. Aspirin is also well absorbed, with peak levels occurring within 1-2 hours. The sustained-release formulation of this medicine may alter the absorption rate of isosorbide mononitrate.
DistributionIsosorbide Mononitrate has a volume of distribution of approximately 0.6 L/kg. It is not extensively bound to plasma proteins. Aspirin is widely distributed throughout body tissues and is approximately 80-90% bound to plasma proteins.
Protein BindingIsosorbide Mononitrate: less than 5% bound to plasma proteins. Aspirin: approximately 80-90% bound to plasma proteins, primarily albumin.
MetabolismIsosorbide Mononitrate undergoes extensive hepatic metabolism via denitration, with no significant first-pass effect. Aspirin is rapidly hydrolyzed to salicylic acid in the liver and other tissues.
Half-LifeIsosorbide Mononitrate: approximately 5 hours. Aspirin: salicylate half-life is dose-dependent, ranging from 2-3 hours at low doses to 15-30 hours at high doses.
ExcretionIsosorbide Mononitrate is excreted primarily in urine as metabolites. Aspirin metabolites are excreted renally, with excretion influenced by urine pH.
BioavailabilityIsosorbide Mononitrate: approximately 100% due to lack of first-pass metabolism. Aspirin: approximately 50-75% due to first-pass metabolism.
Onset of ActionIsosorbide Mononitrate: onset of hemodynamic effects within 30-60 minutes. Aspirin: antiplatelet effect begins within 1 hour but full effect may take several days.
Peak Plasma TimeIsosorbide Mononitrate: 1-2 hours. Aspirin: 1-2 hours for immediate-release; sustained-release formulation may have delayed peak.
Duration of ActionIsosorbide Mononitrate: up to 12 hours for sustained-release formulations. Aspirin: antiplatelet effect lasts for the lifespan of platelets (7-10 days).

How It Works

Isosorbide Mononitrate acts by releasing nitric oxide, which stimulates guanylate cyclase, leading to increased cyclic GMP. This causes relaxation of vascular smooth muscle, predominantly on veins, resulting in reduced preload and decreased myocardial oxygen demand. Aspirin irreversibly inhibits cyclooxygenase-1 (COX-1) and COX-2 enzymes, thereby blocking the synthesis of thromboxane A2, a potent platelet aggregator and vasoconstrictor. This antiplatelet effect helps prevent thrombus formation.

Mechanism Steps

1
Nitric oxide release: Isosorbide Mononitrate is metabolized to release nitric oxide, which activates soluble guanylate cyclase.
2
Increased cyclic GMP: Activation of guanylate cyclase increases cyclic GMP levels, leading to smooth muscle relaxation.
3
Vasodilation: Relaxation of vascular smooth muscle causes dilation of veins and arteries, reducing preload and afterload.
4
COX inhibition by aspirin: Aspirin irreversibly acetylates cyclooxygenase enzymes, inhibiting thromboxane A2 production.
5
Platelet inhibition: Reduced thromboxane A2 leads to decreased platelet aggregation and vasoconstriction.

💡 How to Take isoloprin 30mg/75mg capsule

Strength: Sustained-release capsule containing Isosorbide Mononitrate 30 mg and Aspirin 75 mg.

1Swallow the capsule whole with a glass of water.
2Do not crush, chew, or break the capsule.
3Take it at the same time each day.
4Take with food to reduce stomach upset.
5If you miss a dose, follow the missed dose instructions.

Dosage Information

Adult DosageThe usual adult dose is one capsule (Isosorbide Mononitrate 30 mg + Aspirin 75 mg) taken orally once daily, preferably at the same time each day. The dose may be adjusted by your doctor based on your condition and response. Do not exceed the prescribed dose. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageElderly patients may be more sensitive to the effects of this medicine, especially hypotension and bleeding. Use with caution and monitor closely. Dose adjustments may be necessary based on renal and hepatic function.
Renal ImpairmentUse with caution in patients with renal impairment. Aspirin may accumulate and increase the risk of toxicity. Monitor renal function and adjust dose as needed.
Hepatic ImpairmentUse with caution in patients with hepatic impairment. Isosorbide Mononitrate is extensively metabolized in the liver; dose adjustment may be required. Monitor liver function.
Maximum Daily DoseThe maximum recommended daily dose is one capsule (Isosorbide Mononitrate 30 mg + Aspirin 75 mg). Do not exceed without medical advice.

Dosage Timeline

🌅 Morning ❌ ☀️ Afternoon ❌ 🌆 Evening ❌ 🌙 Night ❌

🍽️ Food Timing Guide

With food
Take with meals
Reduces stomach upset.
Grapefruit
Avoid
May increase drug levels and hypotensive effect.
Alcohol
Avoid
Increases risk of hypotension and bleeding.

⏰ What to Do If You Miss a Dose

📌 Less than 12 hours have passed since the missed dose
→ Take the missed dose as soon as you remember.
💡 Continue with the regular schedule.
📌 More than 12 hours have passed since the missed dose
→ Skip the missed dose.
💡 Do not double dose to catch up.

⚠️ Side Effects of isoloprin 30mg/75mg capsule

✅ Common Side Effects

Headache (Common (10-30%))
Usually diminishes with continued use. If persistent or severe, consult your doctor.
Dizziness (Common (5-10%))
Rise slowly from sitting or lying positions. Avoid driving if affected.
Flushing (Common (5-10%))
Usually resolves on its own. Stay hydrated.
Stomach irritation (Common (5-10%))
Take with food or milk to reduce irritation.

🚨 Serious Side Effects

Severe hypotension (Rare (<0.1%))
Seek immediate medical attention if you experience fainting, severe dizziness, or blurred vision.
Gastrointestinal bleeding (Rare (<0.1%))
Seek immediate medical attention if you notice black, tarry stools, vomiting blood, or severe abdominal pain.
Allergic reactions (Rare (<0.1%))
Seek emergency help if you develop rash, itching, swelling of face, lips, or throat, or difficulty breathing.
Methemoglobinemia (Very rare (<0.01%))
Seek immediate medical attention if you experience bluish discoloration of lips, nails, or skin, or shortness of breath.

⚠️ Rare Side Effects

Thrombocytopenia
Report unusual bruising or bleeding to your doctor immediately.
Hepatotoxicity
Report yellowing of skin or eyes, dark urine, or right upper abdominal pain.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Warfarin Major
Ibuprofen Major
Sildenafil Major
Methotrexate Major
Antihypertensives Moderate
Corticosteroids Moderate
SSRIs Moderate
Antacids Minor
Ginkgo biloba Minor
Alcohol Major

🚨 Major Interactions

  • Warfarin
  • Other NSAIDs (e.g., ibuprofen)
  • Phosphodiesterase-5 inhibitors (e.g., sildenafil)
  • Methotrexate

⚡ Moderate Interactions

  • Antihypertensives
  • Corticosteroids
  • SSRIs

🍷 Alcohol Interaction

Alcohol should be avoided while taking this medicine. It can potentiate the blood pressure-lowering effect of isosorbide mononitrate, leading to dizziness, fainting, and falls. Additionally, alcohol increases the risk of gastrointestinal bleeding associated with aspirin.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to isosorbide mononitrate, aspirin, or any component of the formulation","Active bleeding or bleeding disorders","Severe hypotension","Concurrent use with phosphodiesterase-5 inhibitors (e.g., sildenafil)","Aspirin-induced asthma or NSAID hypersensitivity","Severe hepatic or renal impairment","Third trimester of pregnancy (aspirin)"]

⚠️ Warnings & Precautions

["Avoid abrupt discontinuation of isosorbide mononitrate to prevent rebound angina.","Use with caution in patients with glaucoma or increased intracranial pressure.","Aspirin may increase the risk of Reye's syndrome in children with viral infections.","Monitor for signs of gastrointestinal bleeding, especially in elderly patients.","Use with caution in patients with asthma or allergies.","Do not use in patients with severe anemia.","May cause dizziness; avoid driving or operating machinery until you know how it affects you."]

🤱 Lactation Safety

Isosorbide Mononitrate and Aspirin are excreted in breast milk. Consult your doctor before breastfeeding while on this medicine.

💊 Overdose Management

Overdose may cause severe hypotension, headache, flushing, dizziness, and tachycardia. In case of overdose, seek immediate medical attention. Treatment is supportive and symptomatic. Activated charcoal may be administered if within 1-2 hours of ingestion. Monitor vital signs and provide intravenous fluids if needed.

⏰ Missed Dose

If you miss a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double dose.

Additional Safety Advice

General Safety

Take this medicine exactly as prescribed. Do not crush or chew the capsule; swallow it whole. Avoid alcohol as it may increase the risk of low blood pressure and stomach bleeding. Do not use this medicine if you have active bleeding, severe anemia, or a history of aspirin-induced asthma. Inform your doctor about all other medications you are taking, especially blood thinners, NSAIDs, and antihypertensives. Regular monitoring of blood pressure, heart rate, and signs of bleeding is advised. Do not stop this medicine abruptly without consulting your doctor.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients are at higher risk of gastrointestinal bleeding, hypotension, and renal impairment. Use with caution and monitor closely. Dose adjustments may be needed.

🤰 Pregnancy Planning (TTC)

Consult your doctor if you are planning pregnancy. Aspirin use in pregnancy should be discussed; isosorbide mononitrate is not recommended unless clearly needed.

🏥 Post-Surgery Considerations

Inform your surgeon about this medicine before any surgery. It may need to be stopped temporarily due to bleeding risk. Follow your doctor's instructions.

🦷 Dental Procedures

Inform your dentist about this medicine before any dental procedure. It may increase bleeding risk. Your dentist may recommend stopping it temporarily.

💚 Lifestyle Tips for Better Results

🏃
Maintain a healthy weight to reduce cardiac workload.
🥗
Engage in regular low-impact exercise like walking or swimming.
😴
Follow a heart-healthy diet low in saturated fats.
💧
Avoid smoking and limit alcohol consumption.
🧘
Manage stress through relaxation techniques.
🌞
Get adequate sleep.

🏋️ Exercise Considerations

Avoid strenuous exercise until you know how this medicine affects you, as it may cause dizziness or hypotension. Consult your doctor before starting any new exercise regimen.

🥗 Diet Recommendations

Include omega-3 rich foods like fish.
Reduce salt intake to manage blood pressure.
Eat plenty of fruits and vegetables.
Stay well hydrated.

💼 Impact on Daily Work & Life

This medicine may cause dizziness or lightheadedness, affecting your ability to drive or operate machinery. Avoid these activities until you know how it affects you. It is generally safe for office work.

🛑 When to Stop This Medicine

Do not stop this medicine without consulting your doctor. If you experience severe side effects, contact your doctor immediately for guidance.

📅 Long-Term Use Effects

Long-term use may increase the risk of gastrointestinal bleeding, renal impairment, and hypotension. Regular monitoring of blood pressure, renal function, and signs of bleeding is recommended. Do not stop without medical advice.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Lifestyle modifications

Diet, exercise, and stress management can complement medicine.

Evidence: Well-established
Other antiplatelet agents

Clopidogrel may be used if aspirin is not tolerated.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No specific vaccine interactions are established. However, consult your doctor before receiving any live vaccines while on this medicine.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate unless specified

✅ DO

Keep in original container

❌ DON'T

Do not transfer to unmarked containers

✅ DO

Keep away from direct sunlight

❌ DON'T

Do not store in bathroom cabinet

✈️ Traveling with This Medicine

Carry this medicine in its original packaging with a copy of your prescription. Store at room temperature and protect from moisture. When crossing time zones, adjust dosing times gradually under medical advice. Declare it to customs if required. Keep enough supply for your trip.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 58-year-old man with a history of heart attack
He was prescribed this medicine after recovering from a heart attack. He took it regularly with food and monitored his blood pressure. He experienced mild headache initially, which subsided after a week. He has not had any recurrent cardiac events.
💡 Lesson: Consistent use and regular monitoring help prevent future cardiovascular events.
👤 A 65-year-old woman with chronic stable angina
She started this medicine to reduce angina attacks. She noticed fewer episodes of chest pain and improved exercise tolerance. She was advised to avoid alcohol and to report any signs of bleeding.
💡 Lesson: This medicine can significantly improve quality of life in angina patients when taken as prescribed.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: Isosorbide Mononitrate starts working within 30-60 minutes, while Aspirin's antiplatelet effect begins within 1 hour but full effect may take several days.

Q: Can I take this medicine with other painkillers?

A: Consult your doctor before taking any other painkillers, especially NSAIDs, as they can interact and increase bleeding risk.

Q: Is it safe to stop this medicine suddenly?

A: No, stopping abruptly can worsen angina. Always consult your doctor before stopping.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I take this medicine long-term?
  • Will it affect my kidney function?
  • Can I drive after taking this medicine?
  • Does it interact with my blood pressure medicine?
  • What if I miss a dose?
  • Can I drink alcohol while taking this?

🔄 Substitutes for isoloprin 30mg/75mg capsule

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This medicine can be taken on an empty stomach.
    Fact: It should be taken with food to reduce stomach irritation.
  • Myth: You can stop this medicine once you feel better.
    Fact: It is usually a long-term treatment; stopping abruptly can increase risk of heart attack or stroke.
  • Myth: This medicine is safe to take with any other painkiller.
    Fact: It can interact dangerously with other NSAIDs and blood thinners.

🔄 Alternative Options

Generic Alternatives

  • Isosorbide Mononitrate 30 mg + Aspirin 75 mg sustained-release capsules

Brand Alternatives

  • Monosprin 30 Capsule SR

📊 Comparison with Similar Medicines

[{"medicine":"Isosorbide Mononitrate + Aspirin","composition":"Isosorbide Mononitrate 30 mg + Aspirin 75 mg","uses":"Angina, cardiovascular prevention","notes":"Combination for dual benefit."},{"medicine":"Isosorbide Mononitrate alone","composition":"Isosorbide Mononitrate 30 mg","uses":"Angina prophylaxis","notes":"No antiplatelet effect."},{"medicine":"Aspirin alone","composition":"Aspirin 75 mg","uses":"Antiplatelet therapy","notes":"No vasodilator effect."}]

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