Product image of Neurontin (Gabapentin) supplied by GNH India

Neurontin

Active Ingredient:
Gabapentin
Origin:
EU

Neurontin (Gabapentin)

Gabapentin, the active ingredient in Neurontin, is an anticonvulsant presented as an oral formulation for oral use. It is prescribed for the management of partial seizures, post‑herpetic neuralgia, other neuropathic pain conditions and restless‑legs syndrome in adults. It is available in multiple dose strengths and is administered under medical supervision.

GNH India supplies Neurontin as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide. The company adheres to stringent quality standards, ensuring product integrity throughout the supply chain, and provides regulatory support for import and distribution.

Manufacturer / TM Owner

Upjohn Eesv

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Indications & Clinical Uses

  • Gabapentin is used to treat several neurological and pain‑related conditions by modulating abnormal neuronal excitability.
  • Partial seizures: reduces seizure frequency in patients with focal onset epilepsy.
  • Postherpetic neuralgia: alleviates chronic pain following shingles infection.
  • Neuropathic pain: provides relief for pain associated with diabetic peripheral neuropathy and other nerve‑damage conditions.
  • Restless legs syndrome: diminishes uncomfortable sensations and urges to move the limbs, improving sleep quality.

How It Works

  • Gabapentin binds to the α2δ subunit of voltage‑gated calcium channels in central nervous system neurons, decreasing calcium influx during depolarization. This inhibition reduces the release of excitatory neurotransmitters such as glutamate, substance P and norepinephrine, thereby dampening neuronal hyper‑excitability that underlies seizures and neuropathic pain. The drug does not bind directly to GABA receptors, and its analgesic effect is thought to involve modulation of synaptic transmission in pain pathways.

Side Effects

Gabapentin may cause a range of adverse reactions, varying from mild to serious.

Common Side Effects

  • Dizziness: sensation of light‑headedness or unsteadiness.
  • Somnolence: increased sleepiness or fatigue.
  • Peripheral edema: swelling of the lower limbs.
  • Weight gain: gradual increase in body weight.

Serious or Rare Side Effects

  • Severe allergic reaction: rash, swelling, or difficulty breathing (anaphylaxis).
  • Suicidal thoughts: emergence of depressive symptoms or suicidal ideation.
  • Blood disorders: rare cases of thrombocytopenia or leukopenia.

Precautions & Warnings

When prescribing gabapentin, clinicians should consider several precautionary measures to ensure safe use.

  • Dose adjustment: renal impairment may require reduced dosage.
  • CNS effects: monitor for dizziness or somnolence, especially when initiating therapy.
  • Psychiatric monitoring: observe for mood changes or suicidal thoughts.
  • Pregnancy: limited data; use only if potential benefit justifies potential risk.
  • Drug abuse potential: assess for history of substance misuse.
  • Store at ambient temperature: keep in original container, protect from moisture and heat.

Avoid Interactions

Gabapentin can interact with other medicines, altering its effectiveness or increasing adverse effects.

Major Interactions (Avoid)

  • Antacids containing aluminum or magnesium: reduce gabapentin absorption; separate dosing by at least 2 hours.
  • Opioids (e.g., morphine, oxycodone): may increase risk of respiratory depression and sedation.

Moderate Interactions (Monitor Closely)

  • CNS depressants (benzodiazepines, barbiturates): additive sedation and dizziness.
  • Carbonic anhydrase inhibitors (acetazolamide): may increase gabapentin plasma levels.
  • Alcohol: enhances central nervous system depression.

Frequently Asked Questions

Neurontin, whose active ingredient is gabapentin, is prescribed for the treatment of partial (focal) seizures, post‑herpetic neuralgia, various forms of neuropathic pain and restless‑legs syndrome. It helps control abnormal neuronal firing that contributes to these conditions.

Gabapentin binds to the α2δ subunit of voltage‑gated calcium channels in the central nervous system, reducing calcium entry during nerve activation. This limits the release of excitatory neurotransmitters such as glutamate and substance P, thereby decreasing neuronal hyper‑excitability associated with seizures and pain.

The appropriate dose of Neurontin is individualized by the prescribing clinician based on the patient’s condition, age, renal function and response to therapy. Dosage regimens can vary widely, so patients should follow the specific instructions provided by their healthcare professional.

Safety data for gabapentin in pregnancy and lactation are limited. It should only be used when the potential therapeutic benefit justifies any potential risk to the fetus or infant. Women who are pregnant, planning to become pregnant, or breastfeeding should discuss risks and alternatives with their doctor.

To request Neurontin, submit an enquiry on the product page at gnhindia.com indicating the required quantity. GNH India supplies hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Gabapentin and pregabalin belong to the same class of calcium‑channel α2δ ligands and share similar indications. Pregabalin generally has higher potency and may require lower doses, while gabapentin is often less expensive. Choice between them depends on clinical response, tolerability, cost considerations and physician preference.

Neurontin should be stored at ambient temperature, below 25 °C, in its original packaging to protect it from moisture and light. Keep the container tightly closed and out of reach of children. Do not store in bathrooms or near heat sources.

Neurontin is taken orally, usually with a full glass of water. It can be taken with or without food, but consistency with meals may help reduce gastrointestinal upset. Tablets should be swallowed whole and not crushed or chewed unless specifically instructed by a healthcare professional.

Serious risks include severe allergic reactions such as anaphylaxis, emergence of suicidal thoughts or depressive symptoms, and rare blood disorders like thrombocytopenia. Respiratory depression can occur when gabapentin is combined with opioids or other central nervous system depressants.

Gabapentin is contraindicated in individuals with known hypersensitivity to gabapentin or any of its excipients. Caution is advised in patients with severe renal impairment, as drug clearance is reduced. It should also be avoided in patients with a history of substance misuse unless closely monitored.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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