Imdur 30mg Tablet PR: Complete Medicine Guide
Clinical Reference Standards: CDSCO (Central Drugs Standard Control Organisation), Indian Pharmacopoeia (IP) & WHO | Last Updated: September 2026
When to Call Your Doctor IMMEDIATELY
- Severe chest pain that is different from your usual angina
- Fainting or severe dizziness
- Bluish discoloration of lips, nails, or skin
- Shortness of breath or difficulty breathing
- Severe headache that does not go away
- Sudden swelling of face, lips, or throat
- Irregular heartbeat or palpitations
If experiencing severe symptoms, call emergency services immediately.
What is isonit 30mg tablet sr used for?
This medicine is a nitrate used to prevent chest pain (angina) in people with heart conditions. It works by relaxing blood vessels to improve blood flow to the heart. It is taken orally once daily as prescribed by a doctor.
- Generic Name: Isosorbide Mononitrate (30mg)
- Manufacturer: Johnlee Pharmaceuticals Pvt Ltd
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 isonit 30mg tablet sr के बारे में (Hindi Summary)
उपयोग: यह दवा एंजाइना (सीने में दर्द) को रोकने के लिए इस्तेमाल की जाती है। यह रक्त वाहिकाओं को फैलाकर हृदय तक रक्त का प्रवाह बढ़ाती है और हृदय पर दबाव कम करती है। यह दवा एंजाइना के दौरे को रोकने के लिए नियमित रूप से ली जाती है, तीव्र दौरे के इलाज के लिए नहीं।
साइड इफेक्ट्स: आम दुष्प्रभावों में सिरदर्द, चक्कर आना, हल्का सिर घूमना और चेहरे पर लालिमा शामिल हैं। ये आमतौर पर अस्थायी होते हैं। गंभीर दुष्प्रभाव दुर्लभ हैं लेकिन इनमें गंभीर निम्न रक्तचाप, बेहोशी और मेथेमोग्लोबिनेमिया शामिल हो सकते हैं। यदि आपको गंभीर चक्कर या बेहोशी महसूस हो तो तुरंत चिकित्सा सहायता लें।
सुरक्षा सलाह: इस दवा को अपने डॉक्टर के निर्देशानुसार ही लें। इसे अचानक बंद न करें क्योंकि इससे एंजाइना बिगड़ सकता है। इस दवा के साथ शराब का सेवन न करें क्योंकि इससे निम्न रक्तचाप का खतरा बढ़ सकता है। बैठने या लेटने की स्थिति से धीरे-धीरे उठें ताकि चक्कर न आएं। यदि आप गर्भवती हैं, गर्भवती होने की योजना बना रही हैं, या स्तनपान करा रही हैं तो अपने डॉक्टर को बताएं। सिल्डेनाफिल, टैडालाफिल या वर्डेनाफिल जैसी दवाओं के साथ इस दवा का सेवन न करें क्योंकि इससे खतरनाक रूप से रक्तचाप गिर सकता है।
💊 isonit 30mg tablet sr Uses & Benefits
[{"condition":"Prevention of angina pectoris","description":"This medicine is used to prevent chest pain episodes in patients with coronary artery disease.","evidence":"Well-established"},{"condition":"Chronic stable angina","description":"It helps reduce the frequency and severity of angina attacks when used regularly.","evidence":"Well-established"}]
Off-label uses: [{"condition":"Heart failure","description":"Sometimes used in combination with other medicines to manage heart failure symptoms.","evidence":"Limited"},{"condition":"Esophageal spasm","description":"May be used to relieve chest pain caused by esophageal spasms.","evidence":"Limited"}]
Primary treatment for: Angina pectoris
Also treats: Coronary artery disease, Heart failure
📋 Drug Information
| Generic Name(s) | Isosorbide Mononitrate (30mg) |
| Brand Name | isonit 30mg tablet sr |
| Manufacturer | Johnlee Pharmaceuticals Pvt Ltd |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | CARDIAC |
| Action Class | NO Donors |
| Route of Administration | Oral |
| Storage | Store at room temperature between 15°C and 30°C (59°F and 86°F). Protect from light and moisture. |
| Shelf Life | 24 months from the date of manufacture. |
| WHO Guideline | Not established from the available information. |
| ICMR Guideline | Not established from the available information. |
👨⚕️ Doctor's Practical Tips
Evidence-based practical advice from experienced clinicians
🔍 Is This Medicine Right for Your Symptom?
Educational reference. Always consult a doctor for diagnosis.
🔬 How This Medicine Works (Pharmacology)
Pharmacokinetics
How It Works
Isosorbide Mononitrate works by releasing nitric oxide, which activates guanylate cyclase and increases cyclic GMP levels in vascular smooth muscle cells. This leads to relaxation of smooth muscle and dilation of blood vessels, particularly veins. The dilation of veins reduces preload, while dilation of arteries reduces afterload, decreasing myocardial oxygen demand and improving blood flow to the heart.
Mechanism Steps
💡 How to Take isonit 30mg tablet sr
Strength: Isosorbide Mononitrate 30 mg immediate-release tablet.
Dosage Information
| Adult Dosage | The usual adult dose of this medicine is 30 mg to 60 mg taken once daily. The dose may be increased to 120 mg once daily if needed. The dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. It is important to follow the prescribed dosing schedule to prevent tolerance. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatrician. |
| Elderly Dosage | Elderly patients may be more sensitive to the effects of this medicine, especially dizziness and hypotension. Start with a lower dose and monitor closely. |
| Renal Impairment | No dose adjustment is required for mild to moderate renal impairment. Use with caution in severe renal impairment. |
| Hepatic Impairment | No dose adjustment is required for mild to moderate hepatic impairment. Use with caution in severe hepatic impairment. |
| Maximum Daily Dose | The maximum recommended daily dose is 120 mg. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of isonit 30mg tablet sr
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Sildenafil | Major | |
| Tadalafil | Major | |
| Vardenafil | Major | |
| Riociguat | Major | |
| Alcohol | Moderate | |
| Beta-blockers | Moderate | |
| Calcium channel blockers | Moderate | |
| Diuretics | Moderate | |
| NSAIDs | Minor | |
| Grapefruit juice | Minor |
🚨 Major Interactions
- Phosphodiesterase-5 inhibitors (e.g., sildenafil, tadalafil, vardenafil)
- Riociguat
⚡ Moderate Interactions
- Alcohol
- Antihypertensives (e.g., beta-blockers, calcium channel blockers)
- Diuretics
🍷 Alcohol Interaction
Alcohol may enhance the blood pressure-lowering effect of this medicine, leading to dizziness, fainting, or severe hypotension. It is advisable to avoid alcohol while taking this medicine.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Hypersensitivity to Isosorbide Mononitrate or other nitrates","Severe hypotension","Concomitant use with phosphodiesterase-5 inhibitors","Concomitant use with riociguat","Increased intracranial pressure"]
⚠️ Warnings & Precautions
["Avoid abrupt discontinuation as it may precipitate angina.","Use with caution in patients with low blood pressure or heart failure.","May cause dizziness; avoid driving or operating machinery until you know how it affects you.","Alcohol may enhance hypotensive effects.","Use with caution in patients with severe liver or kidney disease."]
🤱 Lactation Safety
Not established from the available information. Consult your doctor before breastfeeding.
💊 Overdose Management
Overdose may cause severe hypotension, headache, dizziness, and methemoglobinemia. Seek immediate medical attention. Treatment is supportive and symptomatic. If methemoglobinemia occurs, methylene blue may be used as an antidote.
⏰ 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 the dose to catch up.
Additional Safety Advice
Take this medicine exactly as prescribed by your doctor. Do not stop taking it suddenly, as this can worsen angina. Avoid alcohol while taking this medicine because it can increase the risk of low blood pressure. Rise slowly from sitting or lying positions to prevent dizziness. Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding. Do not use this medicine if you are taking medicines for erectile dysfunction such as sildenafil, tadalafil, or vardenafil, as this can cause a dangerous drop in blood pressure. Keep this medicine out of reach of children.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients may be more sensitive to the blood pressure-lowering effects of this medicine. Start with a lower dose and monitor blood pressure regularly. Use caution to prevent falls due to dizziness.
🤰 Pregnancy Planning (TTC)
If you are planning to become pregnant, consult your doctor. The safety of this medicine during pregnancy is not well established, and your doctor may consider alternative treatments.
🏥 Post-Surgery Considerations
Inform your surgeon and anesthesiologist that you are taking this medicine. It may interact with anesthetic agents and affect blood pressure during surgery. Your doctor may advise temporary discontinuation.
🦷 Dental Procedures
Inform your dentist that you are taking this medicine. It may cause dizziness or low blood pressure during dental procedures. Your dentist may take precautions.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
Exercise is beneficial for heart health, but avoid strenuous activities that trigger angina. Consult your doctor before starting any new exercise program. If you experience chest pain during exercise, stop immediately and rest.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause dizziness or lightheadedness, especially when you first start taking it. Avoid driving or operating heavy machinery until you know how it affects you. Most people can continue their normal activities with caution.
🛑 When to Stop This Medicine
Do not stop this medicine without consulting your doctor. If you experience severe side effects or your condition changes, your doctor may adjust or stop the medicine. Abrupt discontinuation can worsen angina.
📅 Long-Term Use Effects
Long-term use of this medicine may lead to tolerance, where the medicine becomes less effective. To prevent this, doctors often prescribe a nitrate-free interval. Regular monitoring of blood pressure and angina symptoms is recommended. Long-term use is generally safe when taken as prescribed.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Diet, exercise, and stress management can complement medicine for heart health.
Evidence: Well-establishedBeta-blockers or calcium channel blockers may be used as alternatives or in combination.
Evidence: Well-established💉 Vaccination Considerations
💉 If You're Getting Vaccinated
No specific vaccine interactions are known. However, consult your doctor before receiving any vaccine 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
When traveling, carry this medicine in its original packaging along with a copy of your prescription. Store it at room temperature and protect it from light and moisture. If crossing time zones, consult your doctor about adjusting the dosing schedule. Keep enough supply for the entire trip and carry it in your hand luggage. Check customs regulations for carrying prescription medicines.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: This medicine starts working within 30 to 60 minutes after taking a dose, but its full preventive effect develops with regular use.
A: Yes, but inform your doctor about all your medicines. Your doctor will monitor your condition.
A: Consult your doctor. The safety of this medicine during pregnancy is not well established, so it should be used only if clearly needed.
🤔 Common Patient Concerns
🔄 Substitutes for isonit 30mg tablet sr
View AllAlternative brands with exact same active ingredient:
-
angifree 30mg tabletMicro Labs Ltd ₹20.63 56% CHEAPER
-
vasotrate od 30mg tabletTorrent Pharmaceuticals Ltd ₹22.88 51.2% CHEAPER
-
nitrovas 30mg tablet srVeritaz Healthcare Ltd ₹25.00 46.7% CHEAPER
-
monocard 30mg tablet srMinova Life Sciences Pvt Ltd ₹32.63 30.4% CHEAPER
-
imnit 30mg tabletDr Reddy's Laboratories Ltd ₹34.22 27% CHEAPER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: This medicine can be taken to relieve an acute angina attack.
Fact: This medicine is for prevention, not for immediate relief of an ongoing angina attack. - Myth: You can stop this medicine suddenly if you feel better.
Fact: Abrupt discontinuation can worsen angina. Always consult your doctor before stopping. - Myth: It is safe to take this medicine with erectile dysfunction drugs.
Fact: Combining with erectile dysfunction drugs can cause a dangerous drop in blood pressure and is contraindicated.
🔄 Alternative Options
Generic Alternatives
- Isosorbide Mononitrate 30 mg tablet
Brand Alternatives
- Imdur 30mg tablet PR