Numethyl-g 300 Tablet: Complete Guide To Uses, Side Effects, And Safety
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
- Suicidal thoughts or behavior
If experiencing severe symptoms, call emergency services immediately.
What is numethyl-g 300 tablet used for?
This medicine is a combination of gabapentin and methylcobalamin used to treat neuropathic pain. Gabapentin reduces pain signals in the nervous system, while methylcobalamin supports nerve repair. It is taken orally, usually once or twice daily, and should not be stopped suddenly.
- Generic Name: Information coming soon
- Manufacturer: Multiple manufacturers
- Form: Allopathy
- Pregnancy Category: Consult doctor
- Prescription Required: Yes
🇮🇳 numethyl-g 300 tablet के बारे में (Hindi Summary)
उपयोग: यह दवा न्यूरोपैथिक दर्द के इलाज के लिए इस्तेमाल की जाती है, जो तंत्रिका क्षति के कारण होने वाला पुराना दर्द है। यह मधुमेह न्यूरोपैथी, दाद के बाद होने वाले दर्द, और साइटिका जैसी स्थितियों में राहत देती है। यह दवा तंत्रिकाओं को शांत करके दर्द के संकेतों को कम करती है और विटामिन बी12 की मदद से तंत्रिकाओं की मरम्मत करती है।
साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में चक्कर आना, नींद आना, थकान, और अस्थिरता शामिल हैं। कुछ लोगों को धुंधली दृष्टि, मुँह सूखना, या जी मिचलाना भी हो सकता है। गंभीर दुष्प्रभाव दुर्लभ हैं, लेकिन अगर आपको सांस लेने में कठिनाई, चेहरे या गले में सूजन, या त्वचा पर गंभीर दाने हों तो तुरंत डॉक्टर से संपर्क करें।
सुरक्षा सलाह: इस दवा को हमेशा डॉक्टर के बताए अनुसार ही लें। इसे अचानक बंद न करें, क्योंकि इससे दौरे पड़ सकते हैं या दर्द बढ़ सकता है। जब तक आपको पता न चले कि यह दवा आप पर कैसा असर करती है, तब तक वाहन चलाने या मशीनरी चलाने से बचें। शराब का सेवन न करें। अगर आप गर्भवती हैं या स्तनपान करा रही हैं, तो डॉक्टर को बताएं।
💊 numethyl-g 300 tablet Uses & Benefits
[{"condition":"Diabetic peripheral neuropathy","description":"This medicine helps relieve burning, tingling, and shooting pain in the hands and feet caused by nerve damage from diabetes.","evidence":"Well-established"},{"condition":"Postherpetic neuralgia","description":"It reduces the persistent, sharp, and stabbing pain that can linger after a shingles infection.","evidence":"Well-established"},{"condition":"Sciatica","description":"This medicine can ease nerve pain radiating from the lower back down the leg due to nerve compression.","evidence":"Moderate"},{"condition":"Neuropathic pain from spinal cord injury","description":"It may be used to manage chronic nerve pain following spinal cord injuries.","evidence":"Limited"}]
Off-label uses: [{"condition":"Fibromyalgia","description":"Sometimes prescribed to reduce widespread musculoskeletal pain and improve sleep in fibromyalgia patients.","evidence":"Limited"},{"condition":"Migraine prophylaxis","description":"Occasionally used to prevent migraines, though evidence is not robust.","evidence":"Limited"}]
Primary treatment for: Neuropathic pain
Also treats: Diabetic neuropathy, Postherpetic neuralgia, Sciatica, Fibromyalgia
📋 Drug Information
| Generic Name(s) | Information coming soon |
| Brand Name | numethyl-g 300 tablet |
| Manufacturer | Multiple manufacturers |
| Packaging / Form | Varies by brand (Allopathy) |
| Therapeutic Class | NEURO CNS |
| Action Class | |
| Route of Administration | Oral |
| Storage | Store at room temperature between 15°C and 30°C (59°F to 86°F). Protect from light and moisture. 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 combines two active ingredients: gabapentin and methylcobalamin. Gabapentin is an anticonvulsant that works by binding to the alpha-2-delta subunit of voltage-gated calcium channels in the nervous system. This binding reduces the influx of calcium into nerve cells, which in turn decreases the release of excitatory neurotransmitters such as glutamate, substance P, and noradrenaline. By doing so, gabapentin dampens the abnormal signaling in damaged nerves that causes neuropathic pain. Methylcobalamin is a coenzyme form of vitamin B12 that is essential for the maintenance of the myelin sheath surrounding nerve fibers. It supports nerve regeneration and improves nerve conduction. Together, these ingredients help alleviate neuropathic pain and promote nerve health.
Mechanism Steps
💡 How to Take numethyl-g 300 tablet
Strength: Each tablet contains gabapentin 300 mg and methylcobalamin 500 mcg.
Dosage Information
| Adult Dosage | The usual adult dose of this medicine is one tablet taken orally once or twice daily, or as directed by your physician. The dose may be gradually increased based on your response and tolerability. The maximum recommended dose is typically 300 mg of gabapentin per day, but your doctor may adjust this based on your condition and kidney function. Dose must be individualized by a qualified clinician based on indication, age, weight, renal and hepatic function. |
| Pediatric Dosage | Pediatric dosing is not established from available information. Consult a pediatrician. |
| Elderly Dosage | Elderly patients may be more sensitive to the side effects of this medicine, especially dizziness, drowsiness, and unsteadiness. Dose adjustment may be necessary based on renal function. Start with a lower dose and titrate slowly. Consult your doctor for personalized dosing. |
| Renal Impairment | Dose adjustment is required in patients with renal impairment. For creatinine clearance 30-59 mL/min, the dose may be reduced. For creatinine clearance 15-29 mL/min, further reduction is needed. For creatinine clearance <15 mL/min, the dose should be reduced to once daily or as directed by a nephrologist. Consult your doctor for specific dosing. |
| Hepatic Impairment | No dose adjustment is typically required for mild to moderate hepatic impairment. However, caution is advised in severe hepatic impairment. Consult your doctor for personalized dosing. |
| Maximum Daily Dose | The maximum recommended daily dose is 300 mg of gabapentin, but this may be increased up to 3600 mg per day in divided doses under close medical supervision for certain conditions. Do not exceed the dose prescribed by your doctor. |
Dosage Timeline
🍽️ Food Timing Guide
⏰ What to Do If You Miss a Dose
⚠️ Side Effects of numethyl-g 300 tablet
✅ Common Side Effects
🚨 Serious Side Effects
⚠️ Rare Side Effects
Consult your doctor if you experience any unusual symptoms.
🔬 Drug Interactions
| Drug | Severity | Effect |
|---|---|---|
| Morphine | Major | |
| Alcohol | Major | |
| Aluminum/magnesium antacids | Moderate | |
| Diazepam | Moderate | |
| Amitriptyline | Moderate | |
| Cimetidine | Minor | |
| Oral contraceptives | Minor | |
| Naproxen | Minor | |
| Paracetamol | Minor | |
| Omeprazole | Minor |
🚨 Major Interactions
- Opioid analgesics (e.g., morphine, oxycodone)
- Alcohol
- Antacids containing aluminum or magnesium
⚡ Moderate Interactions
- Benzodiazepines (e.g., diazepam, lorazepam)
- Tricyclic antidepressants (e.g., amitriptyline)
- Antihypertensives
🍷 Alcohol Interaction
Alcohol should be avoided while taking this medicine because it can increase drowsiness, dizziness, and the risk of central nervous system depression. Combining alcohol with gabapentin may also impair motor skills and judgment, making driving or operating machinery dangerous.
🔎 Check Your Other Medicines
Educational tool. Always confirm with your doctor or pharmacist.
🛡️ Safety & Warnings
🚫 Contraindications
["Hypersensitivity to gabapentin, methylcobalamin, or any component of the formulation.","Severe renal impairment (creatinine clearance
⚠️ Warnings & Precautions
["May cause dizziness and drowsiness; avoid driving or operating machinery until you know how it affects you.","Do not stop this medicine abruptly as it can cause withdrawal seizures.","Use with caution in elderly patients due to increased risk of side effects.","May increase the risk of suicidal thoughts; monitor mood closely.","Avoid alcohol and other CNS depressants.","Inform your doctor if you have kidney disease, liver disease, or heart failure.","May cause peripheral edema; report swelling to your doctor.","Not recommended during pregnancy unless clearly needed.","May affect the efficacy of oral contraceptives; use backup contraception."]
🤱 Lactation Safety
Gabapentin is excreted in human breast milk. Because of the potential for serious adverse reactions in nursing infants, a decision should be made whether to discontinue nursing or to discontinue the medicine, taking into account the importance of the medicine to the mother. Methylcobalamin is also excreted in breast milk and is considered safe. Consult your doctor before breastfeeding.
💊 Overdose Management
Overdose of this medicine may cause severe drowsiness, dizziness, double vision, slurred speech, and diarrhea. In severe cases, it can lead to respiratory depression, coma, and death. If you suspect an overdose, seek emergency medical attention immediately. Treatment is supportive and may include gastric lavage, activated charcoal, and hemodialysis if necessary. There is no specific antidote for gabapentin.
⏰ 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 take two doses at the same time to make up for a missed dose.
Additional Safety Advice
Always take this medicine exactly as prescribed by your doctor. Do not change the dose or stop taking it without consulting your doctor, as sudden withdrawal can cause seizures or worsening of pain. Avoid driving or operating heavy machinery until you know how this medicine affects you, as it can cause dizziness and drowsiness. Do not drink alcohol while taking this medicine, as it can increase drowsiness and other side effects. Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding. Also, tell your doctor about all other medicines you are taking, especially pain relievers, antidepressants, or anti-anxiety drugs, as they may interact with this medicine. Keep this medicine out of reach of children and store it in a cool, dry place away from direct sunlight.
👴 Special Considerations for Elderly
💡 For Patients Above 65
Elderly patients are more likely to experience dizziness, drowsiness, and unsteadiness. Dose adjustment based on renal function is often necessary. Regular monitoring of kidney function and fall risk assessment are recommended.
🤰 Pregnancy Planning (TTC)
If you are planning to become pregnant, consult your doctor before taking this medicine. Gabapentin may harm the fetus. Effective contraception should be used during treatment. Methylcobalamin is safe, but the combination should be used only if clearly needed.
🏥 Post-Surgery Considerations
This medicine may be continued after surgery for pain management, but consult your surgeon and anesthesiologist. It can interact with anesthetic agents and increase sedation. Dose adjustment may be needed.
🦷 Dental Procedures
Inform your dentist if you are taking this medicine, as it may interact with local anesthetics or sedatives used during dental procedures. It may also cause dry mouth, which can affect dental health.
💚 Lifestyle Tips for Better Results
🏋️ Exercise Considerations
Avoid high-impact exercises that may worsen nerve pain. Consult your doctor before starting any new exercise routine. If you experience dizziness or unsteadiness, avoid activities that require balance.
🥗 Diet Recommendations
💼 Impact on Daily Work & Life
This medicine may cause drowsiness and dizziness, which can affect your ability to drive or operate machinery. It is advisable to avoid such activities until you know how the medicine affects you. Inform your employer if your job involves operating heavy machinery.
🛑 When to Stop This Medicine
Do not stop this medicine without consulting your doctor. If you experience severe side effects or your pain improves significantly, your doctor may gradually reduce the dose. Abrupt discontinuation can cause withdrawal symptoms.
📅 Long-Term Use Effects
Long-term use of this medicine may require regular monitoring of kidney function, especially in elderly patients. Gabapentin can cause dependence and withdrawal symptoms if stopped abruptly. Methylcobalamin is generally safe for long-term use. Periodic assessment of pain control and dose adjustment is necessary.
🌿 Non-Medicine Approaches
These can complement medicine but do not replace prescribed treatment.
Can complement medicine for chronic pain.
Evidence: Well-establishedMay help reduce neuropathic pain in some patients.
Evidence: LimitedMay provide symptomatic relief for nerve pain.
Evidence: Moderate💉 Vaccination Considerations
💉 If You're Getting Vaccinated
No specific interactions with vaccines 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 in a cool, dry place away from direct sunlight. If crossing time zones, adjust your dosing schedule gradually under your doctor's guidance. Check local customs regulations for carrying prescription medicines. Always carry enough supply for your entire trip.
💰 Cost Analysis & Savings
👥 Real Patient Stories
Educational, anonymized scenarios. Individual results may vary.
💬 Questions Patients Often Ask
A: You may start to feel some relief within a few days, but it may take several weeks for the full effect. Continue taking it as prescribed.
A: Consult your doctor before taking any other painkillers, as some may interact with this medicine.
A: This medicine can cause dizziness and drowsiness. Avoid driving until you know how it affects you.
🤔 Common Patient Concerns
🛑 Myths vs. Facts
- Myth: This medicine is a painkiller like paracetamol.
Fact: This medicine is not a simple painkiller; it works specifically on nerve pain and is not effective for ordinary headaches or muscle pain. - Myth: You can stop this medicine once pain improves.
Fact: Stopping suddenly can cause withdrawal symptoms and worsen pain. Always consult your doctor before stopping. - Myth: This medicine is addictive.
Fact: Gabapentin has a low potential for addiction when used as prescribed, but it can be misused. Follow your doctor's instructions carefully.
🔄 Alternative Options
Generic Alternatives
- Gabapentin 300 mg + Methylcobalamin 500 mcg tablets from various manufacturers.
Brand Alternatives
- Numethyl-G 300 Tablet