nitrogesic rectal ointment - Nitroglycerin (0.2% w/w) medicine

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🏭 Troikaa Pharmaceuticals Ltd 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 24, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Well-established for anal fissure.
Reviewed by
SaathiMed Expert Panel | Sep 24, 2026

When to Call Your Doctor IMMEDIATELY

  • Severe chest pain or difficulty breathing
  • Fainting or severe dizziness
  • Sudden swelling of the face, lips, or throat
  • Bluish discoloration of the skin or lips
  • Severe headache that does not go away
  • Blood in stool or severe rectal bleeding
  • Irregular heartbeat or palpitations

If experiencing severe symptoms, call emergency services immediately.

What is nitrogesic rectal ointment used for?

This medicine is a rectal ointment containing nitroglycerin 0.2% w/w. It is used to treat anal fissures by relaxing the anal sphincter muscle, reducing pain and promoting healing. It is applied directly into the anal canal, usually 2-3 times daily, as prescribed by a doctor.

  • Generic Name: Nitroglycerin (0.2% w/w)
  • Manufacturer: Troikaa Pharmaceuticals Ltd
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 nitrogesic rectal ointment के बारे में (Hindi Summary)

उपयोग: यह दवा नाइट्रोग्लिसरीन 0.2% w/w युक्त एक रेक्टल मरहम है, जिसका उपयोग गुदा विदर (एनल फिशर) के इलाज के लिए किया जाता है। यह गुदा की मांसपेशियों को आराम देकर दर्द कम करती है और घाव को भरने में मदद करती है। इसे डॉक्टर के निर्देशानुसार गुदा में लगाया जाता है, आमतौर पर दिन में 2-3 बार। यह दवा केवल बाहरी उपयोग के लिए है और इसे मुँह से नहीं लेना चाहिए।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में सिरदर्द, चक्कर आना, और लगाने की जगह पर जलन या खुजली शामिल हैं। सिरदर्द आमतौर पर हल्का होता है और कुछ दिनों में ठीक हो जाता है। कभी-कभी रक्तचाप कम हो सकता है, जिससे बेहोशी या कमजोरी महसूस हो सकती है। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन यदि आपको एलर्जी, सांस लेने में कठिनाई, या चेहरे पर सूजन हो, तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा का उपयोग करने से पहले अपने डॉक्टर को अपनी सभी स्वास्थ्य समस्याओं और दवाओं के बारे में बताएं। यदि आपको हृदय रोग, निम्न रक्तचाप, या नाइट्रेट से एलर्जी है, तो इसका उपयोग न करें। इसे केवल गुदा में लगाएं, मुँह से न लें। उपयोग से पहले और बाद में हाथ धोएं। गर्भावस्था या स्तनपान के दौरान डॉक्टर से सलाह लें। बच्चों की पहुंच से दूर रखें। दवा को कमरे के तापमान पर, धूप से बचाकर रखें।

💡 Did You Know? The Indian pharmaceutical market is expected to reach $130 billion by 2030.

💊 nitrogesic rectal ointment Uses & Benefits

[{"condition":"Anal fissure","description":"This medicine is used to relieve pain and promote healing of anal fissures by relaxing the internal anal sphincter muscle, reducing spasm and improving blood flow to the area.","evidence":"Well-established"},{"condition":"Chronic anal fissure","description":"For chronic fissures that have not healed with conservative measures, this medicine can help reduce sphincter pressure and facilitate healing.","evidence":"Well-established"},{"condition":"Post-operative pain after hemorrhoidectomy","description":"Sometimes used to reduce sphincter spasm and pain after hemorrhoid surgery.","evidence":"Limited"}]

Off-label uses: [{"condition":"Achalasia","description":"Nitroglycerin has been used off-label to temporarily relieve esophageal spasm in achalasia, but it is not a standard treatment.","evidence":"Limited"},{"condition":"Biliary colic","description":"Rarely used off-label to relax the sphincter of Oddi and relieve biliary colic pain.","evidence":"Limited"}]

Primary treatment for: Anal fissure

Also treats: Chronic anal fissure, Post-hemorrhoidectomy pain

📋 Drug Information

Generic Name(s)Nitroglycerin (0.2% w/w)
Brand Namenitrogesic rectal ointment
ManufacturerTroikaa Pharmaceuticals Ltd
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassCARDIAC
Action ClassNO Donors
Route of AdministrationRectal
StorageStore at room temperature (15-30°C). Protect from light and moisture. Keep the tube tightly closed when not in use. Do not freeze.
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
Apply this medicine at the same times each day to maintain a consistent effect.
2
Use the applicator provided to ensure the ointment is applied inside the anal canal, not just on the outside.
3
If you experience a headache, it is usually temporary. Lying down in a dark room may help.
4
Avoid alcohol while using this medicine to prevent severe dizziness and low blood pressure.
5
Do not use this medicine if you are taking erectile dysfunction drugs such as sildenafil or tadalafil.
6
Keep the tube tightly closed and store it at room temperature.
7
If your symptoms do not improve within 4 weeks, consult your doctor for alternative treatments.
8
Wash your hands thoroughly before and after application to prevent contamination.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Anal pain during bowel movements
This medicine is commonly prescribed for anal fissures, which cause this symptom.
Likely Use
Blood on toilet paper
Anal fissures often cause minor bleeding, and this medicine helps heal them.
Likely Use
Anal itching
This medicine can relieve itching associated with anal fissures.
Likely Use
Fever
This medicine is not used to treat fever.
Not Primary
Chest pain
This medicine is not for chest pain; it is for anal fissures. Seek emergency care for chest pain.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionNitroglycerin is absorbed through the rectal mucosa. The absorption is rapid, but the exact bioavailability from rectal ointment is not well established. It is estimated that a significant portion of the drug enters the systemic circulation, avoiding first-pass metabolism in the liver.
DistributionNitroglycerin is widely distributed throughout the body. It has a large volume of distribution, approximately 3 L/kg. It crosses the blood-brain barrier and placenta.
Protein BindingNitroglycerin is approximately 60% bound to plasma proteins.
MetabolismNitroglycerin is metabolized in the liver by glutathione-dependent organic nitrate reductase and also in the blood by enzymatic denitration. It is converted to glycerol dinitrate and other metabolites, releasing nitric oxide.
Half-LifeThe elimination half-life of nitroglycerin is approximately 1 to 4 minutes. However, the clinical effect lasts longer due to the formation of active metabolites.
ExcretionNitroglycerin and its metabolites are primarily excreted in the urine.
BioavailabilityThe bioavailability of nitroglycerin from rectal ointment is not well established but is considered to be higher than oral due to avoidance of first-pass metabolism. It is estimated to be around 60-80%.
Onset of ActionThe onset of action after rectal application is typically within 5 to 10 minutes.
Peak Plasma TimePeak plasma concentration is reached approximately 30 to 60 minutes after rectal application.
Duration of ActionThe duration of action is approximately 4 to 6 hours.

How It Works

Nitroglycerin is a nitrate that works by releasing nitric oxide, which activates guanylate cyclase in smooth muscle cells. This leads to an increase in cyclic guanosine monophosphate (cGMP), causing smooth muscle relaxation. In the context of anal fissures, this relaxation reduces the resting pressure of the internal anal sphincter, which improves blood flow to the fissure and promotes healing. Additionally, the vasodilation effect can help reduce pain associated with sphincter spasm.

Mechanism Steps

1
Absorption and metabolism: After rectal application, nitroglycerin is absorbed through the rectal mucosa and enters the bloodstream. It is then metabolized to release nitric oxide.
2
Activation of guanylate cyclase: Nitric oxide diffuses into smooth muscle cells and activates the enzyme guanylate cyclase.
3
Increase in cGMP: Activated guanylate cyclase converts GTP to cGMP, leading to increased intracellular cGMP levels.
4
Smooth muscle relaxation: Elevated cGMP activates protein kinase G, which reduces intracellular calcium levels and causes smooth muscle relaxation.
5
Reduced sphincter pressure: Relaxation of the internal anal sphincter decreases anal resting pressure, improving blood flow and promoting fissure healing.

💡 How to Take nitrogesic rectal ointment

Strength: Rectal ointment containing nitroglycerin 0.2% w/w.

1Wash your hands thoroughly with soap and water.
2Remove the cap from the tube and attach the applicator provided.
3Lie on your side with your knees bent, or stand with one leg raised on a chair.
4Gently insert the applicator into the anal canal, about 1 inch (2.5 cm).
5Squeeze the tube to apply the prescribed amount of ointment.
6Withdraw the applicator carefully and discard it if it is disposable.
7Wash the applicator if reusable, and wash your hands again.
8Avoid touching the tip of the tube or applicator to any surface to prevent contamination.

Dosage Information

Adult DosageThe usual adult dose of this medicine is to apply a small amount (approximately 1 inch or 2.5 cm) of the ointment into the anal canal using the applicator provided, typically two to three times daily, or as directed by your doctor. The exact dose and frequency depend on the severity of the condition and your response to treatment. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. Do not exceed the recommended dose.
Pediatric DosagePediatric dosing is not established from available information. Consult a pediatrician.
Elderly DosageElderly patients may be more sensitive to the effects of nitroglycerin, especially hypotension and dizziness. Use with caution and monitor blood pressure closely. Dose adjustment may be necessary.
Renal ImpairmentNo specific dose adjustment is recommended for renal impairment. However, caution is advised in patients with severe renal impairment.
Hepatic ImpairmentNo specific dose adjustment is recommended for hepatic impairment. However, caution is advised in patients with severe hepatic impairment.
Maximum Daily DoseThe maximum daily dose should not exceed the amount prescribed by your doctor. Typically, no more than 3 applications per day are recommended.

Dosage Timeline

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

🍽️ Food Timing Guide

With food
No specific timing required
This medicine is applied rectally, so food does not affect its absorption.
Grapefruit
Avoid
May increase nitroglycerin levels and risk of hypotension.
Alcohol
Avoid
May cause severe hypotension and dizziness.

⏰ What to Do If You Miss a Dose

📌 Less than half the dosing interval has passed
→ Apply the missed dose as soon as you remember.
💡 Continue with your regular schedule.
📌 More than half the dosing interval has passed
→ Skip the missed dose.
💡 Do not double the dose to catch up.

⚠️ Side Effects of nitrogesic rectal ointment

✅ Common Side Effects

Headache (Common (up to 50%))
Usually resolves with continued use. If severe, consult your doctor; they may adjust the dose or recommend a pain reliever.
Dizziness (Common (10-20%))
Rise slowly from sitting or lying positions. Avoid driving if affected.
Rectal burning or stinging (Common (10-20%))
This usually subsides after a few minutes. If persistent, consult your doctor.
Lightheadedness (Common (5-10%))
Sit or lie down until it passes. Avoid sudden movements.
Flushing (Uncommon (1-5%))
Usually harmless and temporary.

🚨 Serious Side Effects

Severe hypotension (Rare (<0.1%))
Seek immediate medical attention if you experience fainting, severe dizziness, or blurred vision.
Allergic reaction (Rare (<0.1%))
Seek emergency help if you develop rash, swelling of face, lips, or throat, or difficulty breathing.
Methemoglobinemia (Very rare (<0.01%))
Symptoms include bluish skin, confusion, and shortness of breath. Seek immediate medical attention.

⚠️ Rare Side Effects

Bradycardia
Report a slow or irregular heartbeat to your doctor immediately.
Exfoliative dermatitis
Seek medical attention if you experience widespread skin peeling or rash.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Sildenafil Major
Tadalafil Major
Riociguat Major
Beta-blockers Moderate
Calcium channel blockers Moderate
Alcohol Moderate
Ergot alkaloids Moderate
Heparin Minor
Aspirin Minor
Diuretics Moderate

🚨 Major Interactions

  • Phosphodiesterase-5 inhibitors (e.g., sildenafil, tadalafil)
  • Riociguat

⚡ Moderate Interactions

  • Antihypertensives (e.g., beta-blockers, calcium channel blockers)
  • Alcohol
  • Ergot alkaloids

🍷 Alcohol Interaction

Alcohol can enhance the blood pressure-lowering effect of nitroglycerin, leading to dizziness, fainting, and potentially dangerous hypotension. It is advisable to avoid alcohol or limit its consumption while using this medicine.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to nitroglycerin or other nitrates","Severe hypotension (systolic blood pressure

⚠️ Warnings & Precautions

["This medicine is for rectal use only. Do not take by mouth.","Avoid contact with eyes, lips, and mucous membranes.","Use with caution in patients with low blood pressure or cardiovascular disease.","Tolerance to nitroglycerin can develop with prolonged use. Use the lowest effective dose for the shortest duration possible.","Do not use this medicine if you are taking erectile dysfunction drugs.","Wash hands thoroughly after application.","Do not exceed the prescribed dose.","Keep out of reach of children.","Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding.","Avoid alcohol while using this medicine."]

🤱 Lactation Safety

It is not known whether nitroglycerin is excreted in human breast milk. Because many drugs are excreted in human milk, caution should be exercised when this medicine is administered to a nursing woman. Consult your doctor before using this medicine while breastfeeding.

💊 Overdose Management

Overdose of nitroglycerin can cause severe hypotension, headache, confusion, and methemoglobinemia. If you suspect an overdose, seek immediate medical attention. Treatment is supportive and symptomatic. If methemoglobinemia is present, methylene blue may be administered. Maintain blood pressure with fluids and vasopressors if necessary.

⏰ Missed Dose

If you miss a dose, apply 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

General Safety

Before using this medicine, inform your doctor if you have any heart conditions, low blood pressure, or if you are taking any other medications, especially those for erectile dysfunction, as the combination can cause a dangerous drop in blood pressure. Do not use this medicine if you are allergic to nitroglycerin or any other nitrates. Avoid using this product if you have severe anemia, increased intracranial pressure, or a recent head injury. This medicine is for rectal use only and should not be taken by mouth. Wash your hands thoroughly before and after application. Use the applicator provided to insert the ointment gently into the anal canal as directed. Do not exceed the prescribed dose or frequency. If you are pregnant or breastfeeding, consult your doctor before using this medicine. Keep this medicine out of reach of children. Store it at room temperature, away from direct sunlight and moisture. Do not use this medicine after the expiry date. If you miss a dose, apply it as soon as you remember, but if it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more sensitive to the blood pressure-lowering effects of nitroglycerin. Use with caution and monitor blood pressure regularly. Dizziness and falls are a concern; advise patients to rise slowly from sitting or lying positions.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor before using this medicine. The safety of nitroglycerin during pregnancy is not well established. Your doctor will weigh the benefits and risks.

🏥 Post-Surgery Considerations

If you have recently had surgery, especially anal or rectal surgery, consult your doctor before using this medicine. It may be used to relieve post-operative sphincter spasm, but only under medical supervision.

🦷 Dental Procedures

This medicine is applied rectally and is not expected to interfere with dental procedures. However, inform your dentist about all medicines you are taking, especially if you have cardiovascular conditions.

💚 Lifestyle Tips for Better Results

🏃
Increase your fiber intake by eating fruits, vegetables, and whole grains to soften stools.
🥗
Drink plenty of water throughout the day to stay hydrated and prevent constipation.
😴
Avoid straining during bowel movements; take your time and relax.
💧
Engage in regular physical activity to promote healthy digestion.
🧘
Practice good anal hygiene; gently clean the area with water after each bowel movement.
🌞
Avoid prolonged sitting on the toilet; limit to 5-10 minutes.

🏋️ Exercise Considerations

Exercise is generally safe while using this medicine, but if you experience dizziness or lightheadedness, avoid activities that require balance or coordination, such as cycling or lifting heavy weights. Listen to your body and rest if you feel unwell.

🥗 Diet Recommendations

Eat a high-fiber diet including fruits, vegetables, and whole grains.
Drink at least 8-10 glasses of water daily.
Avoid spicy and processed foods that can irritate the digestive tract.
Include probiotic-rich foods like yogurt to support gut health.
Limit caffeine and alcohol, as they can dehydrate and worsen constipation.

💼 Impact on Daily Work & Life

This medicine may cause dizziness or lightheadedness, especially when you first start using it. Avoid driving or operating heavy machinery until you know how it affects you. If your job involves sitting for long periods, take breaks to stand and walk around to reduce pressure on the anal area. Inform your employer if you need accommodations.

🛑 When to Stop This Medicine

Stop using this medicine and consult your doctor if your symptoms do not improve after 4 weeks of treatment, if you experience severe side effects, or if you develop new symptoms. Do not stop abruptly without consulting your doctor, as they may need to adjust your treatment plan.

📅 Long-Term Use Effects

Long-term use of this medicine can lead to tolerance, where the effect diminishes over time. It is generally recommended for short-term use until the fissure heals. Prolonged use may also cause local irritation. Regular follow-up with your doctor is important to assess healing and adjust treatment. If used for more than a few weeks, monitor for side effects like headaches and dizziness.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Sitz baths

Soaking in warm water for 10-15 minutes several times a day can help relax the anal sphincter and promote healing.

Evidence: Well-established
High-fiber diet and hydration

Eating a high-fiber diet and drinking plenty of fluids softens stools and reduces straining, aiding fissure healing.

Evidence: Well-established
Topical calcium channel blockers

Diltiazem or nifedipine ointments are alternative treatments that also relax the sphincter.

Evidence: Well-established
Botulinum toxin injection

For chronic fissures, botulinum toxin can temporarily paralyze the sphincter muscle, reducing pain and promoting healing.

Evidence: Well-established

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

There are no known interactions between this medicine and vaccines. You can receive vaccinations as scheduled. However, inform your healthcare provider about this medicine before any vaccination.

📦 Storage Guide

✅ DO

Store at room temperature (15-30°C)

❌ DON'T

Do not refrigerate or freeze

✅ DO

Keep the tube tightly closed when not in use

❌ DON'T

Do not leave the cap off

✅ DO

Keep away from direct sunlight and moisture

❌ DON'T

Do not store in the bathroom

✅ DO

Keep out of reach of children

❌ DON'T

Do not transfer to another container

✈️ Traveling with This Medicine

When traveling with this medicine, carry it in its original packaging along with a copy of your prescription. Store it at room temperature, away from direct sunlight and moisture. If you are traveling across time zones, continue with your regular dosing schedule as closely as possible. For air travel, keep it in your carry-on luggage to avoid extreme temperatures in checked baggage. Check the customs regulations of your destination country regarding prescription medications. It is advisable to carry enough supply for your entire trip.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 40-year-old man with a painful anal fissure
He was prescribed this medicine to apply twice daily. After the first application, he experienced a mild headache, which subsided after a few days. Within two weeks, his pain during bowel movements significantly decreased, and the fissure began to heal. He found that applying the ointment after a warm bath helped with relaxation and ease of application.
💡 Lesson: Consistent use as prescribed and patience with initial side effects can lead to successful healing of anal fissures.
👤 A 55-year-old woman with chronic anal fissure
She had been suffering from chronic anal fissure for months. Her doctor prescribed this medicine along with a high-fiber diet and increased water intake. She noticed improvement in pain within a week, but the headache was bothersome initially. Her doctor advised her to apply a smaller amount and gradually increase, which helped. After six weeks, her fissure healed completely.
💡 Lesson: Combining medicine with lifestyle changes like a high-fiber diet and hydration enhances healing. Adjusting the dose under medical supervision can manage side effects.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: You may start feeling relief from pain within a few days, but complete healing of the fissure may take several weeks. It is important to use the medicine consistently as prescribed.

Q: What should I do if I experience a headache?

A: Headache is a common side effect and usually goes away with continued use. If it is severe or persistent, consult your doctor. They may adjust your dose or recommend a pain reliever.

Q: Can I use this medicine if I have low blood pressure?

A: You should inform your doctor if you have low blood pressure. This medicine can further lower blood pressure, so it may not be suitable for you. Your doctor will decide if it is safe.

Q: Is it safe to use this medicine with other medications?

A: Some medications can interact with this medicine, especially those for erectile dysfunction, high blood pressure, and certain heart conditions. Always inform your doctor about all medicines you are taking.

Q: Can I use this medicine during pregnancy?

A: The safety of this medicine during pregnancy is not well established. Consult your doctor before using it if you are pregnant or planning to become pregnant.

🤔 Common Patient Concerns

💭 These are the concerns patients most commonly raise

  • Can I use this medicine long-term?
  • Will it affect my blood pressure?
  • Can I drive after applying this medicine?
  • Does it interact with my heart medicines?
  • What if I miss a dose?
  • Can I drink alcohol while using this?
  • Is it safe during pregnancy?
  • How soon will I see improvement?

🔄 Substitutes for nitrogesic rectal ointment

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Nitroglycerin rectal ointment is the same as the heart medicine nitroglycerin.
    Fact: While both contain nitroglycerin, the rectal ointment is specifically formulated for local application to treat anal fissures. The heart medicine is usually taken sublingually or as a patch for angina. The dosage and route are different.
  • Myth: You can take nitroglycerin rectal ointment by mouth.
    Fact: This medicine is for rectal use only. Taking it by mouth can be dangerous and is not effective for anal fissures.
  • Myth: Nitroglycerin rectal ointment is addictive.
    Fact: This medicine is not addictive. It does not cause dependence or withdrawal symptoms.
  • Myth: You can use nitroglycerin rectal ointment indefinitely without consulting a doctor.
    Fact: Prolonged use can lead to tolerance and may mask other conditions. It should be used only as prescribed and for the recommended duration.

🔄 Alternative Options

Generic Alternatives

  • Nitroglycerin rectal ointment 0.2% w/w (generic)

Brand Alternatives

  • Myovin rectal ointment

📊 Comparison with Similar Medicines

[{"medicine":"Nitroglycerin rectal ointment","class":"Nitrate","route":"Rectal","main_use":"Anal fissure","common_side_effects":"Headache, dizziness"},{"medicine":"Diltiazem rectal ointment","class":"Calcium channel blocker","route":"Rectal","main_use":"Anal fissure","common_side_effects":"Headache, local irritation"},{"medicine":"Lidocaine rectal ointment","class":"Local anesthetic","route":"Rectal","main_use":"Anal pain","common_side_effects":"Local irritation, numbness"}]

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