nervace-forte injection - Methylcobalamin (2500mcg) + Niacinamide (100mg) medicine

Methy 2500 Injection: Complete Medicine Guide

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🏭 Accilex Nutricorp 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 25, 2026
📋 Prescription Required 💊 Generic Available
Medically Reviewed
12 min read
Evidence: Moderate to well-established for approved indications.
Reviewed by
SaathiMed Expert Panel | Sep 25, 2026

When to Call Your Doctor IMMEDIATELY

  • Difficulty breathing or swallowing
  • Swelling of the face, lips, tongue, or throat
  • Severe rash or hives
  • Irregular heartbeat or palpitations
  • Muscle weakness or cramps
  • Unusual bleeding or bruising
  • Yellowing of the skin or eyes

If experiencing severe symptoms, call emergency services immediately.

What is nervace-forte injection used for?

This medicine is an injectable combination of methylcobalamin (vitamin B12) and niacinamide (vitamin B3) used to treat nerve damage, vitamin deficiencies, and certain types of anaemia. It is given by a healthcare professional.

  • Generic Name: Methylcobalamin (2500mcg) + Niacinamide (100mg)
  • Manufacturer: Accilex Nutricorp
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 nervace-forte injection के बारे में (Hindi Summary)

उपयोग: यह दवा मेथिलकोबालामिन और नियासिनामाइड का संयोजन है, जो इंजेक्शन के रूप में दी जाती है। यह मुख्य रूप से नसों की समस्या, जैसे कि हाथ-पैरों में झनझनाहट, सुन्नपन, जलन और दर्द के इलाज के लिए उपयोग की जाती है। यह विटामिन बी12 की कमी और कुछ प्रकार के एनीमिया के इलाज में भी मदद करती है। यह दवा नसों की मरम्मत और कोशिकाओं को ऊर्जा देने में सहायक होती है। यह केवल डॉक्टर या प्रशिक्षित स्वास्थ्यकर्मी द्वारा ही दी जानी चाहिए।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में इंजेक्शन लगाने की जगह पर दर्द, लालिमा या सूजन, जी मिचलाना, सिरदर्द और चक्कर आना शामिल हैं। कुछ लोगों को मुँह में धातु जैसा स्वाद या हल्का दस्त भी हो सकता है। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन अगर आपको त्वचा पर चकत्ते, खुजली, चेहरे या गले में सूजन, या साँस लेने में कठिनाई हो, तो तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: यह दवा केवल योग्य डॉक्टर या स्वास्थ्यकर्मी द्वारा ही दी जानी चाहिए। बिना प्रशिक्षण के इसे स्वयं न लगाएं। इंजेक्शन लगवाने से पहले अपने डॉक्टर को अपनी सभी स्वास्थ्य समस्याओं, खासकर गुर्दे या लीवर की बीमारी, और सभी दवाओं के बारे में बताएं। यदि आप गर्भवती हैं, गर्भधारण की योजना बना रही हैं, या स्तनपान करा रही हैं, तो डॉक्टर से सलाह लें। इंजेक्शन के बाद कुछ समय क्लिनिक में रुकें ताकि किसी भी तत्काल प्रतिक्रिया का इलाज किया जा सके।

💡 Did You Know? India has the highest number of USFDA-compliant plants outside the USA.

💊 nervace-forte injection Uses & Benefits

[{"condition":"Peripheral neuropathy","description":"This medicine is used to support nerve repair and reduce symptoms such as tingling, numbness, and burning in the hands and feet.","evidence":"Well-established"},{"condition":"Vitamin B12 deficiency","description":"It provides a rapid and reliable source of methylcobalamin to correct deficiency and prevent complications such as anaemia and nerve damage.","evidence":"Well-established"},{"condition":"Diabetic neuropathy","description":"It is often prescribed as part of a comprehensive plan to manage nerve pain and improve nerve function in people with diabetes.","evidence":"Moderate"},{"condition":"Megaloblastic anaemia","description":"It helps in the production of healthy red blood cells when anaemia is caused by vitamin B12 deficiency.","evidence":"Well-established"},{"condition":"Niacin deficiency (pellagra)","description":"The niacinamide component helps correct niacin deficiency and supports skin, digestive, and nervous system health.","evidence":"Well-established"}]

Off-label uses: [{"condition":"Chronic fatigue syndrome","description":"Sometimes used off-label to improve energy levels, although evidence is limited.","evidence":"Limited"},{"condition":"Tinnitus","description":"Occasionally prescribed off-label for ringing in the ears, but evidence is not strong.","evidence":"Limited"}]

Primary treatment for: Peripheral neuropathy

Also treats: Vitamin B12 deficiency, Diabetic neuropathy, Megaloblastic anaemia, Niacin deficiency

📋 Drug Information

Generic Name(s)Methylcobalamin (2500mcg) + Niacinamide (100mg)
Brand Namenervace-forte injection
ManufacturerAccilex Nutricorp
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassVITAMINS MINERALS NUTRIENTS
Action Class
Route of AdministrationParenteral (intramuscular or intravenous injection)
StorageStore in a refrigerator at 2°C to 8°C. Do not freeze. Protect from light. Keep in the original carton until use.
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
Always administer this injection in a healthcare setting where resuscitation equipment is available.
2
Check the expiry date and inspect the solution for particles or discolouration before use.
3
Rotate injection sites to prevent local irritation and pain.
4
Monitor serum potassium levels in patients at risk of hypokalaemia.
5
Assess vitamin B12 levels periodically to ensure adequate response.
6
Educate patients about the signs of allergic reactions and when to seek help.
7
Avoid concurrent use with chloramphenicol as it may reduce efficacy.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

✅
Tingling or numbness in hands and feet
This medicine is commonly prescribed for peripheral neuropathy.
Likely Use
✅
Fatigue and weakness
May be used if caused by vitamin B12 deficiency or anaemia.
Likely Use
❌
Fever
This medicine is not a primary fever reducer.
Not Primary
❌
Joint pain
This medicine is not a first-line treatment for joint pain.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionThis medicine is administered by injection, so it is absorbed directly into the bloodstream without passing through the gastrointestinal tract. The bioavailability is therefore complete for the injected dose.
DistributionMethylcobalamin is distributed to the liver, kidneys, and other tissues, and it is stored in the liver. Niacinamide is widely distributed in body tissues. Both components cross the placenta and are excreted in breast milk.
Protein BindingMethylcobalamin binds to transcobalamin II in the blood for transport to tissues. Niacinamide is not significantly bound to plasma proteins.
MetabolismMethylcobalamin is not metabolised in the traditional sense; it is used as a coenzyme and eventually excreted. Niacinamide is metabolised in the liver to NAD+ and other metabolites, and a portion is methylated to N-methylnicotinamide.
Half-LifeThe elimination half-life of methylcobalamin is approximately 6 days when stored in the liver, but the injected dose has a shorter initial half-life of about 20 hours. The half-life of niacinamide is about 45 minutes.
ExcretionMethylcobalamin is excreted mainly in the bile and urine. Niacinamide and its metabolites are excreted in the urine.
BioavailabilityBioavailability is 100% because the medicine is given by injection.
Onset of ActionThe onset of action varies depending on the indication. For vitamin B12 deficiency, improvement in symptoms may begin within 24 to 48 hours, but neurological improvement may take weeks to months.
Peak Plasma TimePeak plasma levels of methylcobalamin occur within 1 to 2 hours after intramuscular injection. Niacinamide reaches peak levels within 30 to 60 minutes.
Duration of ActionThe duration of action depends on the dose and the patient's condition. For vitamin B12, the effects can last for several days to weeks, while niacinamide's effects are shorter.

How It Works

This medicine works through the combined actions of methylcobalamin and niacinamide. Methylcobalamin is a coenzyme that participates in two important reactions: the conversion of homocysteine to methionine and the conversion of methylmalonyl-CoA to succinyl-CoA. These reactions are essential for the maintenance of the myelin sheath, for red blood cell formation, and for normal nerve signalling. Niacinamide is converted in the body to nicotinamide adenine dinucleotide (NAD+), a coenzyme that is central to cellular energy production and DNA repair. Together, these ingredients support the health and function of the nervous system and help correct deficiencies that can lead to nerve damage and anaemia.

Mechanism Steps

1
Methylcobalamin uptake: After injection, methylcobalamin enters the bloodstream and is taken up by cells, where it is converted into its active coenzyme forms.
2
Methionine synthase activation: Methylcobalamin acts as a cofactor for methionine synthase, which converts homocysteine to methionine, a reaction essential for DNA methylation and myelin maintenance.
3
Methylmalonyl-CoA mutase activation: Methylcobalamin also supports methylmalonyl-CoA mutase, which converts methylmalonyl-CoA to succinyl-CoA, helping to maintain normal nerve function.
4
Niacinamide conversion to NAD+: Niacinamide is converted into NAD+, a coenzyme that participates in redox reactions and energy production in cells.
5
Cellular energy and repair: NAD+ supports ATP production and DNA repair, which are vital for the health of nerve cells and other tissues.

💡 How to Take nervace-forte injection

Strength: Injection: Methylcobalamin 2500 mcg + Niacinamide 100 mg per vial.

1This medicine is given by a healthcare professional as an intramuscular or intravenous injection.
2Do not attempt to self-administer unless you have been trained to do so.
3The injection is usually given in the upper arm, thigh, or buttock for intramuscular use.
4For intravenous use, it is given slowly into a vein.
5After the injection, remain at the clinic for a short period to monitor for any reactions.

Dosage Information

Adult DosageThe usual adult dose of this medicine is 1 vial (containing methylcobalamin 2500 mcg and niacinamide 100 mg) given by intramuscular or intravenous injection once daily or as directed by the physician. The frequency and duration of treatment depend on the underlying condition, severity of symptoms, and clinical response. 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. Dose should be individualized by a qualified clinician based on renal and hepatic function.
Renal ImpairmentDose adjustment may be required in patients with severe renal impairment. Consult a qualified clinician for individualized dosing.
Hepatic ImpairmentDose adjustment may be required in patients with severe hepatic impairment. Consult a qualified clinician for individualized dosing.
Maximum Daily DoseThe maximum daily dose is generally 1 vial (2500 mcg methylcobalamin + 100 mg niacinamide) per day, but this may vary based on the clinical situation. Dose must be individualized by a qualified clinician.

Dosage Timeline

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

🍽️ Food Timing Guide

With food
No specific timing
This medicine is given by injection, so food timing does not affect it.
Alcohol
Avoid
Alcohol can reduce the effectiveness of vitamin B12.

⏰ What to Do If You Miss a Dose

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

⚠️ Side Effects of nervace-forte injection

✅ Common Side Effects

Injection site pain (Common (5-10%))
Apply a cold compress to the area. It usually resolves within a day.
Nausea (Common (5-10%))
Take small sips of water and avoid heavy meals. If it persists, consult your doctor.
Headache (Common (5-10%))
Rest and stay hydrated. Consult your doctor if the headache is severe or persistent.
Dizziness (Uncommon (1-5%))
Sit or lie down until the feeling passes. Avoid driving or operating machinery until you feel normal.
Metallic taste (Uncommon (1-5%))
This usually goes away on its own. Chewing sugar-free gum may help.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek immediate medical attention if you experience rash, itching, swelling of the face or throat, or difficulty breathing.
Low potassium levels (hypokalaemia) (Rare (<0.1%))
Report muscle weakness, cramps, or irregular heartbeat to your doctor immediately.
Blood clots (Rare (<0.1%))
Seek urgent care if you notice swelling, pain, or redness in an arm or leg, or sudden shortness of breath.
Irregular heartbeat (Rare (<0.1%))
Contact your doctor immediately if you feel palpitations or chest discomfort.

⚠️ Rare Side Effects

Skin rash
Discontinue the medicine and consult your doctor.
Itching
Antihistamines may help, but consult your doctor before taking any new medicine.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
Chloramphenicol Major
Colchicine Moderate
Aminoglycosides Moderate
Anticonvulsants Moderate
Vitamin C Minor
Alcohol Minor

🚨 Major Interactions

  • Chloramphenicol
  • Colchicine

⚡ Moderate Interactions

  • Aminoglycosides
  • Anticonvulsants (e.g., phenytoin, phenobarbital)

🍷 Alcohol Interaction

Alcohol can interfere with the absorption and metabolism of vitamin B12 and niacinamide. It is advisable to avoid or limit alcohol consumption while receiving this medicine, especially if you have a history of alcohol misuse or liver disease.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Known hypersensitivity or allergy to methylcobalamin, niacinamide, or any component of the injection","Leber's disease (hereditary optic neuropathy) due to potential worsening of optic nerve damage","Severe renal impairment without medical supervision"]

⚠️ Warnings & Precautions

["This medicine should only be administered by a healthcare professional.","Do not use if the solution is discoloured or contains particles.","Use with caution in patients with low potassium levels or a history of gout.","Patients with kidney or liver disease may require dose adjustment.","Inform your doctor if you are pregnant, planning pregnancy, or breastfeeding.","Avoid alcohol while receiving this medicine.","Keep out of reach of children."]

🤱 Lactation Safety

Methylcobalamin and niacinamide are excreted in breast milk. This medicine is generally considered compatible with breastfeeding, but consult your doctor before use.

💊 Overdose Management

Overdose with this medicine is unlikely because it is given by a healthcare professional. If an overdose is suspected, seek immediate medical attention. Treatment is supportive and symptomatic. Monitor vital signs and provide appropriate care.

⏰ Missed Dose

If you miss a scheduled dose, contact your doctor or nurse to reschedule as soon as possible. Do not try to self-administer a double dose to make up for a missed one.

Additional Safety Advice

General Safety

This medicine must only be given by a qualified healthcare professional. Do not attempt to self-inject this medicine at home unless you have been specifically trained and instructed to do so by your doctor. Before receiving this injection, tell your doctor about all your medical conditions, especially kidney or liver problems, low potassium levels, or any bleeding disorder. Also inform your doctor about all other medicines, supplements, and herbal products you are taking, because some may interact with this medicine. Do not receive this injection if you are allergic to methylcobalamin, niacinamide, or any ingredient in the product. If you are pregnant, planning to become pregnant, or breastfeeding, discuss the risks and benefits with your doctor before receiving this medicine. After the injection, stay at the clinic for a short while so that any immediate reaction can be managed. Keep all follow-up appointments and blood tests as advised by your doctor.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients may be more sensitive to the effects of this medicine. Dose should be individualized based on renal and hepatic function. Monitor for dizziness and falls.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor before receiving this medicine. Adequate vitamin B12 levels are important for fetal development, and your doctor may recommend supplementation.

🏥 Post-Surgery Considerations

This medicine can be used after surgery if indicated for nerve health or vitamin deficiency. Inform your surgeon and anaesthesiologist about all medicines you are taking.

🦷 Dental Procedures

No specific precautions are needed for dental procedures. However, inform your dentist about this medicine.

💚 Lifestyle Tips for Better Results

🏃
Maintain a balanced diet rich in vitamin B12 and niacin.
🥗
Control blood sugar levels if you have diabetes.
😴
Avoid alcohol and smoking.
💧
Engage in regular physical activity to improve nerve health.
🧘
Get adequate sleep to support nerve repair.
🌞
Manage stress through relaxation techniques.

🏋️ Exercise Considerations

If you experience dizziness or weakness after the injection, avoid driving or operating heavy machinery until you feel normal. Gentle exercises like walking or swimming are generally safe, but consult your doctor before starting any new exercise routine.

🥗 Diet Recommendations

Include foods rich in vitamin B12 such as meat, fish, eggs, and dairy.
Eat foods rich in niacin like poultry, fish, whole grains, and peanuts.
Limit alcohol intake.
Stay well hydrated.

💼 Impact on Daily Work & Life

This medicine may cause dizziness or fatigue in some people. If affected, avoid driving or operating machinery until you feel alert. Otherwise, it should not significantly impact your daily activities.

🛑 When to Stop This Medicine

Do not stop this medicine without consulting your doctor. The duration of treatment depends on your condition and response. Your doctor will decide when to stop or switch to oral supplements.

📅 Long-Term Use Effects

Long-term use of this medicine is generally safe when prescribed and monitored by a doctor. Prolonged high doses of vitamin B12 have been associated with acne-like skin reactions in some patients. Regular monitoring of vitamin B12 levels, complete blood count, and potassium levels is recommended. If you experience any unusual symptoms, consult your doctor.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Oral vitamin B12 supplements

May be used for maintenance after initial injectable therapy.

Evidence: Well-established
Dietary changes

Increasing intake of vitamin B12 and niacin-rich foods.

Evidence: Well-established
Physical therapy

Can complement medicine for nerve pain and improve mobility.

Evidence: Moderate

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No specific interactions with vaccines are known. However, inform your doctor about this medicine before receiving any vaccine.

📦 Storage Guide

✅ DO

Store in a refrigerator at 2°C to 8°C

❌ DON'T

Do not freeze

✅ DO

Keep in the original carton to protect from light

❌ DON'T

Do not transfer to another container

✅ DO

Keep out of reach of children

❌ DON'T

Do not use if the solution is discoloured or contains particles

✈️ Traveling with This Medicine

When travelling with this medicine, carry it in its original packaging with the prescription label clearly visible. Keep a copy of your prescription with you. Store it in a cool, dry place, and if travelling by air, carry it in your hand luggage to avoid temperature extremes. Check the customs regulations of your destination country regarding injectable medicines. If you need to take a dose during travel, plan ahead to have it administered by a healthcare professional at your destination.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 52-year-old man with diabetic neuropathy
He had been experiencing burning pain and numbness in his feet for over a year. His doctor prescribed this medicine as part of his treatment plan. After a few weeks of regular injections, he noticed a significant reduction in the burning sensation and improved sensation in his feet. He also made lifestyle changes like controlling his blood sugar and walking daily.
💡 Lesson: Consistent treatment along with good diabetes control can greatly improve nerve symptoms.
👤 A 35-year-old woman with vitamin B12 deficiency
She complained of extreme fatigue, tingling in her hands, and mouth ulcers. Blood tests confirmed vitamin B12 deficiency. She received this injection weekly for a month. Her energy levels improved, and the tingling and ulcers resolved. She was then switched to oral supplements for maintenance.
💡 Lesson: Injectable vitamin B12 can rapidly correct deficiency and relieve symptoms.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: Improvement in symptoms may begin within 24 to 48 hours for vitamin B12 deficiency, but neurological improvement may take weeks to months.

Q: Can I take this injection at home?

A: No, this injection should only be given by a qualified healthcare professional unless you have been specifically trained to self-inject.

Q: Are there any food restrictions?

A: No specific food restrictions, but it is advisable to avoid alcohol as it can reduce the effectiveness of vitamin B12.

Q: Is it safe during pregnancy?

A: Consult your doctor. It is generally considered safe when used at recommended doses, but should only be used if clearly needed.

🤔 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 nervace-forte injection

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: This injection can be self-administered at home without training.
    Fact: This medicine must be given by a qualified healthcare professional unless you have been specifically trained to self-inject.
  • Myth: This injection is a painkiller for all types of pain.
    Fact: This medicine is not a general painkiller. It is used for specific nerve-related conditions and vitamin deficiencies.
  • Myth: More frequent injections will work faster.
    Fact: The dose and frequency must be determined by your doctor. Taking more than prescribed can be harmful.

🔄 Alternative Options

Generic Alternatives

  • Methylcobalamin 2500 mcg + Niacinamide 100 mg injection (generic)

Brand Alternatives

  • Methy 2500 Injection

📊 Comparison with Similar Medicines

[{"medicine":"Methy 2500 Injection","composition":"Methylcobalamin 2500 mcg + Niacinamide 100 mg","route":"Parenteral","primary_use":"Peripheral neuropathy, vitamin B12 deficiency"},{"medicine":"Methylcobalamin 1500 mcg Injection","composition":"Methylcobalamin 1500 mcg","route":"Parenteral","primary_use":"Vitamin B12 deficiency"},{"medicine":"Niacinamide 100 mg Injection","composition":"Niacinamide 100 mg","route":"Parenteral","primary_use":"Niacin deficiency"}]

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