Gabapentin for Migraine prevention

There are a number of second-line migraine treatments. The anti-seizure medication gabapentin has been demonstrated to be mildly useful in migraine and tension headache prophylaxis. In a large study on migraine, doses averaged approximately 2,400 mg per day, but lower doses are usually prescribed. Some patients do well with very low doses (200 or 300 mg per day). Sedation and dizziness may be a problem; however, gabapentin does not appear to cause end-organ damage, and weight gain is relatively minimal. Gabapentin can be used as an adjunct to other first-line preventive medications. Pregabalin (Lyrica) has a similar mechanism of action to gabapentin.  Lyrica is fairly safe, but sedation and weight gain often occur.

A safe, non-addicting muscle relaxant, tizanidine is useful for migraine and chronic daily headache. Tizanidine may be used on an as-needed basis for milder headaches, or for neck or back pain. Cyclobenzaprine (10 mg) is helpful for sleeping, and helps some with migraine and chronic daily headache.

Gabapentin dosage for neuropathic pain

Gabapentin is most frequently prescribed off-label to treat nerve pain (neuralgia) due to nerve damage (neuropathy), compression, or irritation.

    • Standard gabapentin dosage for adults: 300 to 1200 mg taken three times per day by mouth.
    • Maximum gabapentin dosage for adults: 3600 mg daily in three divided doses.
    • Renally impaired patients (kidney disease): See dosage for renal impaired patients above

Gabapentin dosage for fibromyalgia

Gabapentin is used off-label to reduce fatigue, provide pain relief, and improve sleep in patients with fibromyalgia.

    • Standard gabapentin dosage for adults: 600 mg twice daily and 1200 mg at bedtime.
    • Maximum gabapentin dosage for adults: 2400 mg daily.
    • Renally impaired patients (kidney disease): See dosage for renal impaired patients above

Gabapentin dosage for alcohol dependence

Gabapentin is widely used off-label to reduce insomnia and cravings in people with alcohol use disorder, particularly those in the maintenance phase of alcohol abstinence.

    • Standard gabapentin dosage for adults: 300 to 600 mg taken three times per day by mouth.
    • Maximum gabapentin dosage for adults: 1800 mg daily in three divided doses.
    • Renally impaired patients (kidney disease): See dosage for renal impaired patients above

Gabapentin dosage for pets

You should not give gabapentin to animals unless a veterinarian has given the animal a prescription for gabapentin. Veterinarians frequently prescribe gabapentin to treat seizures or chronic nerve pain in pets and large animals. The recommended dose is 5-10 mg per kilogram of body weight (2.3-4.5 mg/lb) every 12 hours, but dosing will vary between veterinarians. Gabapentin dosages can vary from 3 to 11 mg per kilogram (1.4 to 5 mg per pound) as an analgesic to 10 to 30 mg mg per kilogram (4.5 to 13.6 per pound) as an anticonvulsant. As with people, the dose may start small and steadily increase until an effective dose is reached.

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