a gab 400mg/10mg tablet - Gabapentin (400mg) + Nortriptyline (10mg) medicine

Gabapin NT Tablet: Comprehensive Guide to Uses, Side Effects, and Safety

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🏭 Aadi Health Care 📦 Varies by brand 💊 Allopathy 📅 Updated: Sep 23, 2026
🤰 Pregnancy Category Not established from the available information. Use only if clearly needed and after consulting your doctor. Both gabapentin and nortriptyline have shown potential risks in animal studies, but human data are limited. 📋 Prescription Required 💊 Generic Available
Medically Reviewed
11 min read
Evidence: Moderate to well-established for neuropathic pain based on studies of individual components.
Reviewed by
SaathiMed Expert Panel | Sep 23, 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
  • Irregular heartbeat or palpitations
  • Thoughts of self-harm or suicide

If experiencing severe symptoms, call emergency services immediately.

What is a gab 400mg/10mg tablet used for?

This medicine is a combination of Gabapentin (400 mg) and Nortriptyline (10 mg) used to treat neuropathic pain. It works by reducing abnormal nerve signals and enhancing pain inhibition in the brain. It is taken orally, usually 2-3 times daily, and should not be stopped abruptly.

  • Generic Name: Gabapentin (400mg) + Nortriptyline (10mg)
  • Manufacturer: Aadi Health Care
  • Form: Allopathy
  • Pregnancy Category: Consult doctor
  • Prescription Required: Yes

🇮🇳 a gab 400mg/10mg tablet के बारे में (Hindi Summary)

उपयोग: यह दवा गैबापेंटिन और नॉर्ट्रिप्टिलाइन का संयोजन है, जिसका उपयोग न्यूरोपैथिक दर्द (तंत्रिका दर्द) के इलाज के लिए किया जाता है। यह मधुमेह से होने वाले तंत्रिका दर्द, दाद के बाद होने वाले दर्द, और अन्य पुराने तंत्रिका दर्द में प्रभावी है। यह दर्द को कम करने और जीवन की गुणवत्ता में सुधार करने में मदद करती है।

साइड इफेक्ट्स: इस दवा के सामान्य दुष्प्रभावों में नींद आना, चक्कर आना, मुँह सूखना, धुंधली दृष्टि, वजन बढ़ना और कब्ज शामिल हैं। गंभीर दुष्प्रभाव दुर्लभ हैं लेकिन इनमें एलर्जी, आत्महत्या के विचार, अनियमित दिल की धड़कन और गंभीर त्वचा प्रतिक्रियाएँ शामिल हो सकती हैं। कोई भी असामान्य लक्षण दिखने पर तुरंत डॉक्टर से संपर्क करें।

सुरक्षा सलाह: इस दवा को डॉक्टर के निर्देशानुसार ही लें। गोली को चबाएं या तोड़ें नहीं, पूरा निगल लें। जब तक आपको इस दवा का असर पता न चल जाए, वाहन चलाने या मशीनरी चलाने से बचें। अचानक दवा बंद न करें, इससे withdrawal symptoms हो सकते हैं। शराब का सेवन न करें। अपने डॉक्टर को अन्य सभी दवाओं के बारे में बताएं।

💡 Did You Know? The first generic medicine was introduced in India in 1970 after the Patents Act was amended.

💊 a gab 400mg/10mg tablet Uses & Benefits

[{"condition":"Diabetic peripheral neuropathy","description":"Reduces burning, shooting, and tingling pain in the feet and hands caused by diabetes-related nerve damage.","evidence":"Well-established"},{"condition":"Postherpetic neuralgia","description":"Relieves persistent nerve pain that can occur after a shingles infection.","evidence":"Well-established"},{"condition":"Neuropathic pain of mixed origin","description":"Used for chronic nerve pain due to various causes, including spinal cord injury or chemotherapy-induced neuropathy.","evidence":"Moderate"},{"condition":"Chronic musculoskeletal pain with neuropathic component","description":"May be prescribed when chronic back or joint pain has a significant nerve-related component.","evidence":"Limited"}]

Off-label uses: [{"condition":"Migraine prophylaxis","description":"Sometimes prescribed off-label to prevent migraines, especially when other treatments are ineffective.","evidence":"Limited"},{"condition":"Fibromyalgia","description":"May be used off-label to reduce widespread pain and improve sleep in fibromyalgia patients.","evidence":"Limited"},{"condition":"Anxiety disorders","description":"Nortriptyline component may help with certain anxiety symptoms, but this is not a primary approved use.","evidence":"Limited"}]

Primary treatment for: Neuropathic pain

Also treats: Diabetic neuropathy, Postherpetic neuralgia, Chronic musculoskeletal pain with neuropathic component

📋 Drug Information

Generic Name(s)Gabapentin (400mg) + Nortriptyline (10mg)
Brand Namea gab 400mg/10mg tablet
ManufacturerAadi Health Care
Packaging / FormVaries by brand (Allopathy)
Therapeutic ClassNEURO CNS
Action Class
Route of AdministrationOral
StorageStore at room temperature (15-30°C) in a dry place, away from direct sunlight and moisture. Keep in the original container.
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
Take this medicine with food to reduce stomach upset.
2
Avoid driving or operating heavy machinery until you know how this medicine affects you.
3
Do not stop this medicine abruptly; always consult your doctor for a gradual taper.
4
Inform your doctor if you experience mood changes, suicidal thoughts, or unusual bleeding.
5
Keep all your follow-up appointments to monitor your response and side effects.
6
Stay well hydrated throughout the day to minimize side effects like dry mouth and constipation.

🔍 Is This Medicine Right for Your Symptom?

Educational reference. Always consult a doctor for diagnosis.

Burning or shooting nerve pain
This medicine is commonly prescribed for this.
Likely Use
Tingling or numbness in hands/feet
This medicine can help with neuropathic pain.
Likely Use
Fever
This medicine is not a primary fever reducer.
Not Primary
Acute muscle pain
This medicine is not for acute musculoskeletal pain.
Not Primary

🔬 How This Medicine Works (Pharmacology)

Pharmacokinetics

AbsorptionGabapentin is absorbed from the gastrointestinal tract via a saturable transport mechanism. Nortriptyline is well absorbed from the gastrointestinal tract. Food does not significantly affect the extent of absorption of either component.
DistributionGabapentin distributes widely in the body, including the central nervous system. Nortriptyline is highly lipophilic and distributes extensively into tissues, including the brain.
Protein BindingGabapentin is less than 3% bound to plasma proteins. Nortriptyline is approximately 90-95% bound to plasma proteins.
MetabolismGabapentin is not significantly metabolized in humans and is excreted unchanged. Nortriptyline is metabolized in the liver primarily by CYP2D6 and to a lesser extent by CYP1A2, CYP2C19, and CYP3A4.
Half-LifeGabapentin: 5-7 hours. Nortriptyline: 18-44 hours (average 25 hours).
ExcretionGabapentin is excreted unchanged in the urine. Nortriptyline and its metabolites are excreted primarily in the urine and to a lesser extent in feces.
BioavailabilityGabapentin: approximately 60% at doses up to 900 mg/day, but decreases at higher doses due to saturable absorption. Nortriptyline: approximately 50-60% due to first-pass metabolism.
Onset of ActionPain relief may begin within a few days, but full therapeutic effect for neuropathic pain can take 2-4 weeks.
Peak Plasma TimeGabapentin: 2-3 hours. Nortriptyline: 7-10 hours.
Duration of ActionThe effects last approximately 8-12 hours for gabapentin and longer for nortriptyline due to its longer half-life. Dosing is typically 2-3 times daily.

How It Works

This medicine combines two active ingredients with complementary mechanisms. Gabapentin binds to the alpha-2-delta subunit of voltage-gated calcium channels on presynaptic neurons, reducing the release of excitatory neurotransmitters such as glutamate and substance P, which decreases abnormal nerve firing. Nortriptyline inhibits the reuptake of serotonin and norepinephrine in the central nervous system, enhancing descending inhibitory pain pathways and modulating pain perception. Together, they reduce neuropathic pain signals and improve pain tolerance.

Mechanism Steps

1
Gabapentin binding to calcium channels: Gabapentin binds to the alpha-2-delta subunit of voltage-gated calcium channels on presynaptic nerve terminals, reducing calcium influx.
2
Reduced neurotransmitter release: Decreased calcium influx leads to reduced release of excitatory neurotransmitters like glutamate and substance P, dampening abnormal pain signaling.
3
Nortriptyline inhibits reuptake: Nortriptyline blocks the reuptake of serotonin and norepinephrine in the synaptic cleft, increasing their availability.
4
Enhanced descending inhibition: Increased serotonin and norepinephrine enhance the descending inhibitory pathways from the brainstem to the spinal cord, reducing pain transmission.
5
Combined analgesic effect: The dual action reduces neuropathic pain perception and improves overall pain relief.

💡 How to Take a gab 400mg/10mg tablet

Strength: Each tablet contains Gabapentin 400 mg and Nortriptyline 10 mg.

1Take this medicine orally with a full glass of water.
2Swallow the tablet whole; do not crush, chew, or break it.
3Take with food to reduce stomach upset.
4Take at the same times each day to maintain consistent levels.
5Do not stop taking this medicine abruptly without consulting your doctor.

Dosage Information

Adult DosageThe usual adult dose is one tablet taken orally two to three times daily, or as directed by your physician. The dose may be adjusted based on your response and tolerability. Do not exceed the prescribed dose. 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 side effects of this medicine, especially drowsiness, dizziness, and anticholinergic effects. Start with a lower dose and titrate slowly. Dose must be individualized by a qualified clinician based on renal and hepatic function.
Renal ImpairmentGabapentin requires dose reduction in renal impairment. Nortriptyline does not require renal dose adjustment but should be used with caution. Consult your doctor for specific dosing.
Hepatic ImpairmentNortriptyline should be used with caution in hepatic impairment; dose reduction may be necessary. Gabapentin does not require hepatic dose adjustment. Consult your doctor.
Maximum Daily DoseThe maximum daily dose should not exceed the prescribed amount. Typically, gabapentin doses above 3600 mg/day and nortriptyline doses above 150 mg/day are not recommended. However, this combination is usually prescribed at lower doses. Follow your doctor's instructions.

Dosage Timeline

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

🍽️ Food Timing Guide

With food
Take with meals
Reduces stomach upset and improves tolerability.
Grapefruit
Avoid
May increase nortriptyline levels and side effects.
Alcohol
Avoid
Increases sedation and impairs motor skills.

⏰ 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 a gab 400mg/10mg tablet

✅ Common Side Effects

Drowsiness (Common (10-20%))
Avoid driving or operating machinery until you know how it affects you. If persistent, consult your doctor.
Dizziness (Common (10-20%))
Rise slowly from sitting or lying positions. Stay hydrated. Consult doctor if severe.
Dry mouth (Common (10-15%))
Sip water frequently, chew sugar-free gum, or use saliva substitutes. Consult dentist if persistent.
Blurred vision (Common (5-10%))
Usually temporary. Avoid driving if vision is affected. Consult eye doctor if persistent.
Weight gain (Common (5-10%))
Monitor weight and maintain a balanced diet. Consult doctor if significant weight gain occurs.
Constipation (Common (5-10%))
Increase fiber and fluid intake. Consult doctor if constipation persists.

🚨 Serious Side Effects

Severe allergic reaction (anaphylaxis) (Rare (<0.1%))
Seek immediate medical attention if you experience rash, itching, swelling of face, lips, tongue, or throat, or difficulty breathing.
Suicidal thoughts or behavior (Rare (<0.1%))
Contact your doctor immediately if you have thoughts of harming yourself.
Irregular heartbeat (arrhythmia) (Rare (<0.1%))
Seek immediate medical attention if you experience palpitations, fainting, or chest pain.
Severe skin reactions (Stevens-Johnson syndrome) (Very rare (<0.01%))
Seek immediate medical attention if you develop a painful rash, blistering, or peeling skin.
Liver toxicity (Rare (<0.1%))
Report yellowing of skin or eyes, dark urine, or severe abdominal pain to your doctor immediately.

⚠️ Rare Side Effects

Blood dyscrasias (e.g., agranulocytosis)
Report unusual bruising, bleeding, or signs of infection to your doctor immediately.
Peripheral neuropathy
Consult your doctor if you experience new or worsening numbness or tingling.
Hyponatremia (low sodium)
Report confusion, headache, or seizures to your doctor.

Consult your doctor if you experience any unusual symptoms.

🔬 Drug Interactions

Drug Severity Effect
MAOIs Major
Opioids Major
CNS depressants Major
Anticholinergics Moderate
CYP2D6 inhibitors Moderate
Sympathomimetics Moderate
Antacids Minor
Cimetidine Minor
Warfarin Moderate
Thyroid medications Moderate

🚨 Major Interactions

  • Monoamine oxidase inhibitors (MAOIs)
  • Opioids (e.g., morphine, codeine)
  • CNS depressants (e.g., benzodiazepines, alcohol)

⚡ Moderate Interactions

  • Anticholinergic drugs (e.g., antihistamines, antipsychotics)
  • CYP2D6 inhibitors (e.g., fluoxetine, paroxetine, quinidine)
  • Sympathomimetic drugs (e.g., pseudoephedrine)

🍷 Alcohol Interaction

Avoid alcohol while taking this medicine. Alcohol can increase drowsiness, dizziness, and sedation, and may worsen the side effects of both gabapentin and nortriptyline. It can also impair your ability to drive or operate machinery.

🔎 Check Your Other Medicines

Educational tool. Always confirm with your doctor or pharmacist.

🛡️ Safety & Warnings

🚫 Contraindications

["Hypersensitivity to gabapentin, nortriptyline, or any component of the formulation","Concurrent use of monoamine oxidase inhibitors (MAOIs) or within 14 days of stopping MAOIs","Uncontrolled narrow-angle glaucoma","Recent myocardial infarction","Severe renal impairment (for gabapentin, dose adjustment needed; not absolute contraindication)","Pregnancy (relative contraindication; consult doctor)"]

⚠️ Warnings & Precautions

["May cause drowsiness and dizziness; avoid driving or operating machinery until effects are known.","Do not stop abruptly; taper gradually to avoid withdrawal symptoms.","Use with caution in elderly patients due to increased risk of falls, confusion, and anticholinergic effects.","May increase risk of suicidal thoughts; monitor mood closely.","Use with caution in patients with a history of seizures, as both drugs can affect seizure threshold.","May cause anticholinergic effects; use with caution in patients with benign prostatic hyperplasia or urinary retention.","Avoid alcohol and other CNS depressants.","Inform your doctor if you have kidney or liver disease; dose adjustments may be needed."]

🤱 Lactation Safety

Gabapentin and nortriptyline are excreted in breast milk. Consult your doctor before breastfeeding. Potential risks to the infant include sedation and poor feeding. Monitor the baby for drowsiness or poor weight gain.

💊 Overdose Management

Overdose of this medicine can cause severe drowsiness, dizziness, tachycardia, hypotension, respiratory depression, and cardiac arrhythmias. Seek immediate medical attention. Treatment is supportive and symptomatic. There is no specific antidote. Gastric lavage may be considered if within 1-2 hours of ingestion. Monitor vital signs, ECG, and renal function. For nortriptyline overdose, sodium bicarbonate may be used for cardiac toxicity.

⏰ 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

General Safety

Take this medicine exactly as prescribed by your doctor. Do not crush, chew, or break the tablet; swallow it whole with a glass of water. Avoid driving or operating heavy machinery until you know how this medicine affects you. Do not stop taking this medicine abruptly, as it can cause withdrawal symptoms such as anxiety, insomnia, and nausea. Inform your doctor about all other medications you are taking, especially MAO inhibitors, opioids, and antihistamines. Avoid alcohol while taking this medicine. Keep out of reach of children.

👴 Special Considerations for Elderly

💡 For Patients Above 65

Elderly patients are more sensitive to the side effects of this medicine, especially drowsiness, dizziness, confusion, and falls. Start with a lower dose and monitor closely. Renal function should be assessed before and during treatment.

🤰 Pregnancy Planning (TTC)

If you are planning to become pregnant, consult your doctor before taking this medicine. Both gabapentin and nortriptyline may pose risks to the fetus. Your doctor may adjust or change your treatment plan.

🏥 Post-Surgery Considerations

Inform your surgeon and anesthesiologist that you are taking this medicine. It may interact with anesthetic agents and other medications used during surgery. Do not stop the medicine without your doctor's advice.

🦷 Dental Procedures

Inform your dentist that you are taking this medicine, as it can cause dry mouth and may interact with dental anesthetics or other medications. Maintain good oral hygiene to prevent dental issues.

💚 Lifestyle Tips for Better Results

🏃
Maintain a healthy weight to reduce stress on nerves and joints.
🥗
Engage in regular low-impact exercise like walking or swimming.
😴
Practice good sleep hygiene to improve pain tolerance.
💧
Include anti-inflammatory foods in your diet.
🧘
Manage stress through relaxation techniques like meditation or yoga.
🌞
Avoid smoking and limit alcohol intake.

🏋️ Exercise Considerations

Avoid high-impact exercises that may worsen nerve pain. Start slowly and consult your doctor or physiotherapist before beginning any new exercise regimen. If you experience increased pain or dizziness during exercise, stop and rest.

🥗 Diet Recommendations

Include omega-3 rich foods like fish, flaxseeds, and walnuts.
Reduce processed and sugary foods.
Stay well hydrated to prevent constipation.
Eat a balanced diet rich in fruits and vegetables.
Limit caffeine and alcohol.

💼 Impact on Daily Work & Life

This medicine can cause drowsiness and dizziness, which may affect your ability to drive or operate machinery. Avoid these activities until you know how the medicine affects you. Inform your employer if your job involves such tasks. Take frequent breaks if you have a desk job.

🛑 When to Stop This Medicine

Do not stop this medicine without consulting your doctor. If you experience serious side effects or your doctor advises discontinuation, follow a tapering schedule to avoid withdrawal symptoms. If you become pregnant or plan to become pregnant, consult your doctor immediately.

📅 Long-Term Use Effects

Long-term use may require periodic monitoring of kidney and liver function, especially if you have underlying conditions. Some patients may develop tolerance or dependence. Regular follow-up with your doctor is essential to adjust the dose and manage side effects. Do not stop the medicine without medical advice.

🌿 Non-Medicine Approaches

These can complement medicine but do not replace prescribed treatment.

Physical therapy

Can complement medicine for chronic pain and improve mobility.

Evidence: Well-established
Cognitive behavioral therapy

Helps manage chronic pain and improve coping skills.

Evidence: Moderate
Transcutaneous electrical nerve stimulation (TENS)

May provide additional pain relief for some patients.

Evidence: Limited

💉 Vaccination Considerations

💉 If You're Getting Vaccinated

No specific interactions with vaccines are established. 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

Carry this medicine in its original packaging with a copy of your prescription. If traveling across time zones, adjust dosing times gradually to avoid withdrawal. Store at room temperature and protect from moisture. Check customs regulations for controlled substances; carry a doctor&#039;s letter if needed.

💰 Cost Analysis & Savings

👥 Real Patient Stories

Educational, anonymized scenarios. Individual results may vary.

👤 A 55-year-old man with diabetic neuropathy
He had been suffering from burning pain in his feet for years. His doctor prescribed this medicine. After 3 weeks, he noticed significant relief in burning and tingling. He experienced mild drowsiness initially, which improved after a few days. He was advised to take it with food and to avoid alcohol.
💡 Lesson: Consistent use and lifestyle modifications can greatly improve neuropathic pain management.
👤 A 62-year-old woman with postherpetic neuralgia
After a shingles episode, she had persistent shooting pain in her chest. This medicine was prescribed, and she found relief within 2 weeks. She had dry mouth and constipation, which were managed with increased fluids and fiber. She was advised not to stop the medicine suddenly.
💡 Lesson: Patience and adherence to the prescribed regimen are key; side effects can be managed with simple measures.

💬 Questions Patients Often Ask

Q: How long does it take to work?

A: You may start feeling some relief within a few days, but full effect for neuropathic pain can take 2-4 weeks. Be patient and consistent.

Q: Can I stop taking this medicine if I feel better?

A: No, do not stop abruptly. Consult your doctor first, as stopping suddenly can cause withdrawal symptoms.

Q: Is it safe to take with other painkillers?

A: Consult your doctor before taking any other painkillers, as interactions may occur.

🤔 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 a gab 400mg/10mg tablet

View All

Alternative brands with exact same active ingredient:

Medical Note: Always consult your doctor before switching medications.

🛑 Myths vs. Facts

  • Myth: Gabapin NT is a painkiller for all types of pain.
    Fact: It is specifically for neuropathic pain, not for acute pain, headache, or muscle pain.
  • Myth: Gabapin NT is addictive.
    Fact: It is not classified as an addictive drug, but it can cause dependence and withdrawal if stopped abruptly.
  • Myth: You can stop Gabapin NT whenever you want.
    Fact: It should be tapered gradually under medical supervision to avoid withdrawal symptoms.

🔄 Alternative Options

Generic Alternatives

  • Gabapentin + Nortriptyline combination generics available

Brand Alternatives

  • Gabapin NT
  • Gabantin NT
  • Gabapentin + Nortriptyline tablets

📊 Comparison with Similar Medicines

[{"medicine":"Gabapentin + Nortriptyline","composition":"Gabapentin 400 mg + Nortriptyline 10 mg","uses":"Neuropathic pain","notes":"Combination provides dual mechanism."},{"medicine":"Pregabalin + Nortriptyline","composition":"Pregabalin 75 mg + Nortriptyline 10 mg","uses":"Neuropathic pain","notes":"Pregabalin has more predictable absorption."},{"medicine":"Duloxetine","composition":"Duloxetine 30/60 mg","uses":"Neuropathic pain, depression","notes":"SNRI with different side effect profile."}]

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