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PetDosageChart

Neurontin (Gabapentin) Dosage for Dogs

Anticonvulsant / Analgesic ⏱ Onset: 1-2 hours ⏳ Duration: 8-12 hours

This dosage information is for educational purposes only. Always consult your veterinarian before giving any medication to your pet. Dosages may vary based on your pet's health conditions, other medications, and individual factors.

Dosage Calculator

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Neurontin Dosage Chart for Dogs by Weight

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Weight Low Dose Standard Dose Max Dose Frequency
5 lbs (2.3 kg) 11.5mg 23mg 46mg every 8-12 hours
10 lbs (4.5 kg) 22.5mg 45mg 90mg (100mg tablet) every 8-12 hours
15 lbs (6.8 kg) 34mg 68mg 136mg every 8-12 hours
20 lbs (9.1 kg) 45.5mg 91mg (100mg tablet) 182mg (2 × 100mg) every 8-12 hours
25 lbs (11.3 kg) 56.5mg 113mg (100mg tablet) 226mg every 8-12 hours
30 lbs (13.6 kg) 68mg 136mg 272mg every 8-12 hours
40 lbs (18.1 kg) 90.5mg (100mg tablet) 181mg (2 × 100mg) 362mg every 8-12 hours
50 lbs (22.7 kg) 113.5mg (100mg tablet) 227mg 454mg every 8-12 hours
60 lbs (27.2 kg) 136mg 272mg 544mg every 8-12 hours
70 lbs (31.7 kg) 158.5mg 317mg (3 × 100mg) 634mg every 8-12 hours
80 lbs (36.3 kg) 181.5mg (2 × 100mg) 363mg 726mg every 8-12 hours
90 lbs (40.8 kg) 204mg (2 × 100mg) 408mg (4 × 100mg) 816mg (8 × 100mg) every 8-12 hours
100 lbs (45.4 kg) 227mg 454mg 908mg (9 × 100mg) every 8-12 hours
120 lbs (54.4 kg) 272mg 544mg 1088mg (11 × 100mg) every 8-12 hours
150 lbs (68 kg) 340mg 680mg (7 × 100mg) 1360mg every 8-12 hours

What is Neurontin (Gabapentin) used for in dogs?

chronic pain neuropathic pain seizures anxiety

How to give Neurontin to your dog

Gabapentin can be given with or without food. Do NOT use liquid gabapentin formulations made for humans, as they often contain xylitol (a sweetener toxic to dogs). If your dog is on gabapentin for seizures, never stop abruptly — this can trigger rebound seizures. Always taper under vet supervision.

Available Forms

capsule, tablet, liquid

Give with Food?

Yes — give with food

Side effects of Neurontin in dogs

Common side effects

sedation
ataxia (wobbliness)
lethargy
diarrhea

Serious side effects

  • severe sedation
  • depression
  • loss of coordination
  • rebound seizures if stopped abruptly

When to call the vet

Call your vet immediately if your dog shows any of these signs:

  • Extreme sedation or inability to walk
  • Difficulty breathing
  • Seizures (especially if dose was missed)
  • Severe vomiting or diarrhea
  • Swelling of face or limbs

Frequently Asked Questions

How much gabapentin can I give my dog?
The typical dose of gabapentin for dogs is 5-10 mg per kilogram of body weight, given every 8-12 hours. For pain management, doses up to 20 mg/kg may be used. Your vet will determine the right dose based on your dog's condition, weight, and other medications.
Can gabapentin kill a dog?
Gabapentin has a wide safety margin in dogs, and fatal overdoses are rare. However, extremely high doses can cause severe sedation, respiratory depression, and dangerously low blood pressure. The bigger risk is with liquid formulations containing xylitol, which is highly toxic to dogs even in small amounts.
What are the side effects of gabapentin in dogs?
The most common side effects are sedation and wobbliness (ataxia), especially when first starting the medication or after a dose increase. These effects usually diminish over a few days as the dog adjusts. Less common side effects include diarrhea, vomiting, and lethargy.
Can I stop giving my dog gabapentin suddenly?
If your dog takes gabapentin for seizures, you should never stop abruptly — sudden discontinuation can trigger rebound seizures. For pain management, your vet may still recommend a gradual taper to avoid any withdrawal effects. Always consult your vet before changing the dosing schedule.
Does gabapentin make dogs sleepy?
Yes, sedation is the most common side effect of gabapentin in dogs. Most dogs become noticeably drowsy, especially during the first few days of treatment. This sedation typically decreases over time as the dog develops tolerance to this effect.