b-nac 75mg Injection: 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
- 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
- Unusual bruising or bleeding
- Severe dizziness or fainting
If experiencing severe symptoms, call emergency services immediately.
What is b-nac 75mg injection used for?
This medicine is a diclofenac injection used for short-term relief of moderate to severe acute pain and inflammation. It works by blocking COX enzymes to reduce prostaglandins. It is given by a healthcare professional as an intramuscular injection, usually 75 mg once daily, with a maximum of 150 mg per day. It is not for self-administration.
- Generic Name: Diclofenac
- Manufacturer: Elfin Pharma Pvt Ltd
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 b-nac 75mg injection के बारे में (Hindi Summary)
उपयोग: यह दवा डाइक्लोफेनाक का इंजेक्शन है, जिसका उपयोग मध्यम से गंभीर तीव्र दर्द और सूजन के इलाज के लिए किया जाता है। यह आमतौर पर मांसपेशियों में गहरे इंजेक्शन के रूप में दी जाती है। यह दर्द, सूजन और बुखार को कम करने में मदद करती है। यह दवा ऑस्टियोआर्थराइटिस, रूमेटाइड आर्थराइटिस, गुर्दे की पथरी के दर्द, और सर्जरी के बाद के दर्द के लिए दी जाती है। यह दवा केवल डॉक्टर या स्वास्थ्यकर्मी द्वारा ही दी जानी चाहिए।
साइड इफेक्ट्स: आम दुष्प्रभावों में इंजेक्शन स्थल पर दर्द, मतली, उल्टी, दस्त, कब्ज, सिरदर्द, चक्कर आना और नींद आना शामिल हैं। गंभीर दुष्प्रभावों में पेट या आंतों में रक्तस्राव, दिल का दौरा, स्ट्रोक, गुर्दे की समस्या, लीवर की समस्या, और गंभीर एलर्जी प्रतिक्रियाएं शामिल हो सकती हैं।
सुरक्षा सलाह: यह दवा केवल योग्य स्वास्थ्यकर्मी द्वारा ही दी जानी चाहिए। अपने डॉक्टर को अपनी सभी चिकित्सीय स्थितियों के बारे में बताएं, खासकर यदि आपको पेट के अल्सर, हृदय रोग, गुर्दे या लीवर की समस्या, या अस्थमा है। यदि आपको डाइक्लोफेनाक या अन्य NSAIDs से एलर्जी है तो इस दवा का उपयोग न करें। इस दवा के साथ शराब का सेवन न करें। यदि आपको चक्कर आना या नींद आना महसूस हो तो वाहन न चलाएं। किसी भी असामान्य रक्तस्राव, गंभीर पेट दर्द, सीने में दर्द, या सांस लेने में कठिनाई हो तो तुरंत डॉक्टर को बताएं।
💊 b-nac 75mg injection Uses & Benefits
[{"condition":"Acute musculoskeletal pain","description":"Provides rapid relief from moderate to severe pain associated with muscle strains, sprains, and soft tissue injuries.","evidence":"Well-established"},{"condition":"Postoperative pain","description":"Used for short-term management of pain following surgical procedures when oral intake is not possible.","evidence":"Well-established"},{"condition":"Renal colic","description":"Effective in relieving the severe pain of kidney stones by reducing inflammation and spasms.","evidence":"Well-established"},{"condition":"Acute exacerbation of osteoarthritis or rheumatoid arthritis","description":"Provides rapid symptomatic relief during flare-ups when oral therapy is inadequate.","evidence":"Well-established"},{"condition":"Acute gout","description":"Helps reduce pain and inflammation during acute gouty attacks.","evidence":"Well-established"}]
Off-label uses: [{"condition":"Migraine","description":"Sometimes used off-label for acute migraine attacks, though not first-line.","evidence":"Limited"},{"condition":"Biliary colic","description":"May be used off-label for pain relief in biliary colic.","evidence":"Limited"}]
Primary treatment for: Acute pain and inflammation
Also treats: Osteoarthritis, Rheumatoid arthritis, Renal colic, Postoperative pain, Acute gout
📋 Drug Information
| Generic Name(s) | Diclofenac |
| Brand Name | Adiflam 50mg Tablet |
| Manufacturer | Elfin Pharma Pvt Ltd |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | PAIN ANALGESICS |
| Action Class | NSAID's- Non-Selective COX 1&2 Inhibitors (acetic acid) |
| Route of Administration | Parenteral (intramuscular injection) |
| Storage | Store below 30°C in a dry place, protected from light. Do not freeze. Keep out of reach of children. |
| 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
This medicine works by reversibly inhibiting both cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) enzymes, which are responsible for converting arachidonic acid into prostaglandins and thromboxanes. By blocking these enzymes, it reduces the production of prostaglandins, which are key mediators of pain, inflammation, and fever. The anti-inflammatory effect is primarily due to inhibition of COX-2, while the gastrointestinal and platelet effects are largely due to COX-1 inhibition.
Mechanism Steps
💡 How to Take b-nac 75mg injection
Strength: 75 mg/3 mL solution for injection
Dosage Information
| Adult Dosage | The usual adult dose is 75 mg (3 mL) administered by deep intramuscular injection into the gluteal region once daily. For severe pain, some clinicians may administer a second dose after 6 to 8 hours, but the total daily dose should not exceed 150 mg. The dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. Treatment should be limited to the shortest duration necessary to control symptoms. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatrician. |
| Elderly Dosage | Elderly patients are at increased risk of adverse effects, particularly gastrointestinal bleeding and renal impairment. Use the lowest effective dose for the shortest duration. Monitor renal and hepatic function closely. |
| Renal Impairment | In patients with mild to moderate renal impairment (eGFR 30-89 mL/min), no dose adjustment is typically necessary, but use with caution. In severe renal impairment (eGFR <30 mL/min), diclofenac is contraindicated. Dose must be individualized by a qualified clinician. |
| Hepatic Impairment | In patients with mild to moderate hepatic impairment, no dose adjustment is typically necessary, but use with caution. In severe hepatic impairment, diclofenac is contraindicated. Dose must be individualized by a qualified clinician. |
| Maximum Daily Dose | The maximum recommended daily dose is 150 mg (two 75 mg injections). |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of b-nac 75mg injection
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Warfarin | Major | |
| Aspirin | Major | |
| Other NSAIDs | Major | |
| Corticosteroids | Major | |
| Methotrexate | Major | |
| Cyclosporine | Major | |
| Lithium | Major | |
| ACE inhibitors | Moderate | |
| Diuretics | Moderate | |
| SSRIs | Moderate |
🚨 Major Interactions
- Warfarin
- Aspirin
- Other NSAIDs
- Corticosteroids
- Methotrexate
- Cyclosporine
- Lithium
- ACE inhibitors and ARBs
- Diuretics
- Selective serotonin reuptake inhibitors (SSRIs)
⚡ Moderate Interactions
- Beta-blockers
- Digoxin
- Phenytoin
- Rifampicin
🍷 Alcohol Interaction
Avoid alcohol while receiving this medicine. Alcohol can increase the risk of gastrointestinal bleeding, ulceration, and liver toxicity. It may also enhance the central nervous system effects such as dizziness and drowsiness.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Known hypersensitivity to diclofenac or other NSAIDs","Active peptic ulcer disease or history of recurrent ulcers","Severe renal impairment (eGFR
⚠️ Warnings & Precautions
["Cardiovascular risk: NSAIDs increase the risk of serious cardiovascular thrombotic events. Use the lowest effective dose for the shortest duration.","Gastrointestinal risk: NSAIDs increase the risk of GI bleeding, ulceration, and perforation. Use with caution in patients with a history of GI disease.","Renal risk: NSAIDs can cause renal impairment. Monitor renal function, especially in dehydrated patients or those with pre-existing renal disease.","Hepatic risk: Monitor liver function in patients on long-term therapy.","Hypersensitivity: Serious allergic reactions, including anaphylaxis, can occur. Discontinue immediately if suspected.","Skin reactions: Serious skin reactions such as Stevens-Johnson syndrome and toxic epidermal necrolysis have been reported.","Hematologic effects: Diclofenac inhibits platelet aggregation and may prolong bleeding time.","Use in elderly: Increased risk of adverse effects. Use with caution and monitor closely."]
🤱 Lactation Safety
Diclofenac is excreted in breast milk in small amounts. It is generally considered compatible with breastfeeding, but consult your doctor before use.
💊 Overdose Management
Overdose with diclofenac can cause nausea, vomiting, abdominal pain, gastrointestinal bleeding, lethargy, drowsiness, and in severe cases, acute renal failure and convulsions. Management includes supportive care, gastric lavage if within 1-2 hours of ingestion, activated charcoal, and monitoring of vital signs and renal function. There is no specific antidote. Hemodialysis is not effective in removing diclofenac.
⏰ Missed Dose
This medicine is typically administered by a healthcare professional in a clinical setting. If you miss a scheduled dose, contact your healthcare provider as soon as possible. Do not attempt to self-administer an extra dose.
Additional Safety Advice
This medicine should only be administered by a qualified healthcare professional. Inform your doctor about all your medical conditions, especially if you have a history of stomach ulcers, heart disease, kidney or liver problems, or asthma. Do not use this medicine if you are allergic to diclofenac or other NSAIDs. Avoid alcohol while receiving this medicine as it can increase the risk of stomach bleeding. Do not drive or operate heavy machinery if you experience dizziness or drowsiness after the injection. Use the lowest effective dose for the shortest duration possible. Do not take other NSAIDs or blood thinners without consulting your doctor. Report any signs of bleeding, severe abdominal pain, chest pain, or difficulty breathing immediately.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients are at increased risk of gastrointestinal bleeding, renal impairment, and cardiovascular events. Use the lowest effective dose for the shortest duration and monitor renal and hepatic function closely.
🤰 Pregnancy Planning (TTC)
If you are planning to become pregnant, consult your doctor before using this medicine. NSAIDs may affect ovulation and are generally avoided during pregnancy, especially in the third trimester.
🏥 Post-Surgery Considerations
This medicine may be used for postoperative pain, but it is contraindicated in the setting of coronary artery bypass graft (CABG) surgery. Inform your surgeon and anesthesiologist about all medications you are taking.
🦷 Dental Procedures
Inform your dentist if you are taking this medicine, as it may increase bleeding risk during dental procedures. Your dentist may recommend temporary discontinuation or additional precautions.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
Avoid strenuous exercise or activities that may increase pain or risk of injury while on this medicine. Gentle stretching and low-impact exercises may be beneficial, but consult your doctor before starting any exercise program.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause dizziness or drowsiness, which can affect your ability to drive or operate machinery. Avoid these activities until you know how the medicine affects you. It is administered in a clinical setting, so you may need to arrange for transportation after receiving the injection.
🛑 When to Stop This Medicine
Stop this medicine and seek immediate medical attention if you experience signs of a serious allergic reaction, gastrointestinal bleeding, chest pain, or difficulty breathing. Do not stop prescribed therapy without consulting your doctor, as abrupt discontinuation may not be appropriate for your condition.
📅 Long-Term Use Effects
Long-term use of this medicine is not recommended due to increased risks of cardiovascular events, gastrointestinal bleeding, renal impairment, and hepatotoxicity. If long-term therapy is necessary, regular monitoring of renal and hepatic function, blood counts, and cardiovascular status is essential. The lowest effective dose should be used for the shortest duration.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Can complement medicine for chronic pain.
Evidence: Well-establishedMay help with pain relief for some conditions.
Evidence: ModerateAlternative for localized pain with fewer systemic side effects.
Evidence: Well-established💉 Vaccination Considerations
💉 If You're Getting Vaccinated
There are no known interactions between this medicine and vaccines. However, if you are scheduled to receive a live vaccine, inform your doctor about all medications you are taking.
📦 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 with this medicine, carry it in its original packaging along with a copy of your prescription. This medicine is for parenteral use and should be administered by a healthcare professional. Store it at room temperature, away from direct sunlight and moisture. If traveling by air, keep it in your carry-on luggage. Check customs regulations for carrying prescription medications in your destination country. It is advisable to carry a doctor's note explaining the medical need for this medicine.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: This medicine typically starts relieving pain within 10 to 30 minutes after intramuscular injection.
A: The analgesic effect usually lasts 4 to 6 hours, but this can vary.
A: This medicine is generally avoided during the third trimester. Consult your doctor for personalized advice.
A: Do not take other NSAIDs concurrently. Consult your doctor before combining with any other pain medication.
A: Avoid alcohol, other NSAIDs, and activities requiring alertness if you experience dizziness or drowsiness.
🤔 Common Patient Concerns
🔄 Substitutes for b-nac 75mg injection
View AllAlternative brands with exact same active ingredient:
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dikonb 75mg injectionNB Healthcare ₹8.00 14.3% COSTLIER
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dclonom 75mg injectionAcinom Healthcare ₹8.50 21.4% COSTLIER
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Fenap 75mg InjectionPax Healthcare ₹9.00 28.6% COSTLIER
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vindec 75mg injectionVinca Lifesciences ₹9.50 35.7% COSTLIER
-
nifdec 75mg injectionElfin Pharma Pvt Ltd ₹9.80 40% COSTLIER
Medical Note: Always consult your doctor before switching medications.
🛑 Myths vs. Facts
- Myth: This medicine is a steroid.
Fact: This medicine is a nonsteroidal anti-inflammatory drug (NSAID), not a steroid. - Myth: This medicine can be self-administered at home.
Fact: This medicine must be administered by a healthcare professional in a clinical setting. - Myth: This medicine is safe to use for long periods.
Fact: This medicine is intended for short-term use only. Long-term use increases the risk of serious side effects. - Myth: This medicine can be taken with alcohol.
Fact: Alcohol should be avoided as it increases the risk of gastrointestinal bleeding and liver toxicity.
🔄 Alternative Options
Generic Alternatives
- Diclofenac sodium injection
Brand Alternatives
- Voveran
- Dynapar
- Nac