Gabapentin 400 mg Capsules are used to treat neuropathic pain and partial seizures. The medication works by affecting nerve signals in the brain that cause pain and seizures. This dosage strength is commonly prescribed for moderate to severe nerve pain, such as that caused by diabetic neuropathy, postherpetic neuralgia, or spinal injuries, and for controlling epileptic seizures in adults and children.

• Effective relief from moderate-to-severe nerve pain

• Used as add-on therapy for partial seizures in epilepsy

• May reduce symptoms of restless leg syndrome (RLS)

• Off-label use includes fibromyalgia, migraine prevention, and anxiety

• 400 mg dosage offers convenient mid-range strength for flexible dosing

• Take by mouth with or without food, as directed

• Usually taken 1 to 3 times per day, based on condition and tolerance

• Swallow the capsule whole — do not chew, crush, or open

• Maintain a consistent daily schedule to keep drug levels steady

• Do not abruptly stop taking Gabapentin; always taper under supervision

• Starting dose for nerve pain: often 300 mg, titrated to 400 mg and beyond

• Typical maintenance: 900 mg–3600 mg/day, divided in 3 doses

• Renal-impaired patients require lower or adjusted doses

• Children’s doses are based on weight and medical guidance

• Use caution if you have kidney problems, breathing disorders, or mental health conditions

• May cause drowsiness, dizziness, or blurred vision

• Avoid alcohol and activities requiring full alertness until effects are known

• Inform your doctor about other medications, especially opioids or antacids

• Long-term users may need regular medical review

• Drowsiness, dizziness, fatigue

• Swelling in hands/feet, coordination issues

• Vision changes, mood swings

• Rare but serious: Suicidal thoughts, allergic reactions, breathing problems

Seek immediate medical attention for serious side effects or allergic reactions.

• Store at 15°C to 25°C (room temperature)

• Protect from heat, moisture, and light

• Keep out of reach of children and pets

Q1. What is Gabapentin 400 mg used for most commonly?
It is often used for nerve pain relief and seizure control, especially when lower doses are insufficient.

Q2. How long does it take to start working?
Initial effects may be felt in a few days, but 1–2 weeks is typical for noticeable relief.

Q3. Is Gabapentin 400 mg safe for long-term use?
Yes, if monitored properly, it can be taken long-term for chronic conditions like neuropathy or epilepsy.