Gabapentin before the vet: what a crossover study measured in cats
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
For some cats, the mere sight of the carrier is enough to trigger a chase, scratching, or an exam that never happens. Before reaching for heavier sedation, a simple oral drug has been tested under real travel conditions. Our travel guidance is gathered in the cat travel and safety section.
Contents · 4 sections
Twenty cats, two visits, a coin flip
Van Haaften, Eichstadt Forsythe, Stelow and Bain published in 2017, in the Journal of the American Veterinary Medical Association, a randomised, double-blind crossover trial in 20 pet cats with a history of fearful or aggressive behaviour during veterinary visits. Each cat was seen twice, a week apart, receiving either 100 mg of gabapentin (13 to 29.4 mg/kg depending on weight) or a placebo each time, given by the owner 90 minutes before placing the cat in its carrier.
Owner-assessed stress scores during transport and the visit, along with the veterinarian's compliance score during the exam, were significantly lower with gabapentin than with the placebo.
What the study does not say
Twenty cats over two sessions each is a small sample, and these were cats specifically selected for a difficult history: the result says nothing about an already calm cat. The authors note mild sedation in some animals without precisely quantifying its frequency or how long it lasted after the visit. The study also does not compare gabapentin to pregabalin, tested separately in a more recent trial — our article on pregabalin before a car trip covers that other protocol — nor to non-drug approaches such as gradual carrier training.
What this changes in practice
- A veterinary prescription is still required: gabapentin is not sold over the counter, and the dose depends on the animal's actual weight, not a flat amount.
- The 90-minute window matters: giving the capsule too late reduced the effect seen in the trial.
- A one-off solution, not a replacement for training: our article on daily carrier habituation remains the base approach for repeated trips.
Frequently asked questions
Does gabapentin knock the cat out?
Mild drowsiness was noted in some cats in the study, without using a term like "anaesthetised" or a detailed sedation score. It is not an anaesthetic, and the animal stays awake and responsive.
Can it be used at every visit?
The trial only covers one-off use before two visits a week apart. Repeated use should be discussed with the treating veterinarian, who will also adjust the dose if needed.
Does a calm cat need it?
No: the study sample only included cats with a history of stress or aggression during veterinary visits. Find all our guides on the cat hub.
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This guide is part of Planète Pets’s Cats universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.
