Quick answer
Gabapentin for cats is a prescription medicine vets use to calm cats before vet visits and to ease long-term pain, such as arthritis. It usually comes as a capsule you can open into a little food, or as a liquid. Sleepiness and wobbly walking are the most common effects and usually wear off within a day. Your vet will set the dose for your cat.
What is gabapentin used for in cats?
Gabapentin is a medicine first developed for people to treat seizures and nerve pain. Vets prescribe gabapentin for cats “off-label”, which is common and legal in veterinary medicine. It’s one of the most widely used medicines in cats because it works well and is generally very safe.
| Use | What it does | How often it’s given |
|---|---|---|
| Vet visit anxiety | Calms fearful cats before travel and handling | Just before a visit |
| Long-term pain | Eases arthritis and nerve pain | Regularly, as ongoing treatment |
| Pain after surgery or injury | Adds to other pain relief | For a short course |
| Seizures | Sometimes added to other seizure medicine | Ongoing |
Gabapentin doesn’t cure anything. It helps your cat feel calmer or more comfortable while other care does its job.
Cats with arthritis show pain in quiet ways: sleeping more, jumping less, missing the litter box or grooming less. If your cat takes gabapentin for pain, watch for these habits to improve and tell your vet what you see.
How does gabapentin help with vet visit anxiety?
Many cats find the carrier, the car and the clinic frightening. A fearful cat can hide, hiss or swat, which makes a proper exam hard and stresses everyone.
In a 2017 study published in JAVMA, cats given gabapentin before a vet visit showed much less stress in the car and during the exam than cats given a placebo. The vets also found them easier to examine. The effects wore off within 8 hours.
Your vet will tell you exactly when to give it before you leave home. Many vets suggest a trial run on a quiet day first, so you can see how your cat responds.
It works best alongside other steps:
- Leave the carrier out at home as a cozy bed
- Cover the carrier with a towel during the trip
- Ask for a quiet room or a cat-only waiting area
Calmer visits can also be quicker and cheaper. See how much a cat vet visit costs.
How is gabapentin given to cats?
Gabapentin is given by mouth. Your vet will set the dose for your cat based on their weight, health and the reason it’s prescribed. Common forms include:
- Capsules. You can open the capsule and mix the powder into a small amount of wet food or a treat. Use a small portion so your cat eats all of it
- Liquid. Often made by a compounding pharmacy in a flavor cats accept
- Chews or treats. Some compounding pharmacies make these
It can be given with or without food. If your cat vomits after a dose, try giving the next one with a meal and let your vet know.
A warning about human liquids. Some gabapentin liquids made for people contain xylitol, a sweetener that’s toxic to dogs. Its effect on cats is less clear, so don’t use a human liquid unless your vet or pharmacist confirms it’s safe for your cat.
In some US states, gabapentin is a controlled substance. That can affect how refills work, so ask your vet if you need a longer supply.
What are the side effects of gabapentin for cats?
Most side effects are mild and short-lived. They’re usually strongest in the first few hours after a dose, or when your cat first starts taking it.
| Effect | What it looks like | What to do |
|---|---|---|
| Sleepiness | Sleeps more, slow to respond | Normal. Let them rest somewhere safe |
| Wobbly walking | Stumbling, swaying, missing jumps | Keep them off stairs and high places |
| Drooling | Wet chin after the dose | Usually passes. Mention it to your vet |
| Vomiting or diarrhea | Soon after a dose | Try with food. Call your vet if it repeats |
| Can’t stand or be woken | Very limp or unresponsive | Call your vet now |
Deep sedation isn’t the goal of treatment. If your cat seems far sleepier than expected, or is still very wobbly the next day, call your vet. They may change the dose or the timing.
After a dose, keep your cat indoors and in a quiet room with food, water and a litter box close by. A wobbly cat can fall from furniture or get stuck somewhere.
Which cats shouldn’t take gabapentin?
Gabapentin is safe for most cats, but tell your vet about all of the following before your cat starts it.
- Kidney disease. Gabapentin leaves the body through the kidneys. Cats with kidney disease can build up higher levels and be more sleepy, so your vet may adjust the plan
- Pregnancy or nursing. Its safety isn’t well established
- Other sedatives or pain medicines. Opioids and other calming drugs can add to the sleepiness
- Antacids. They can reduce how much gabapentin is absorbed, so ask your vet how to space them
- Supplements. Mention anything you give, including calming products and CBD
If your cat takes gabapentin every day, don’t stop it suddenly without talking to your vet. That’s especially important in cats taking it for seizures, because stopping abruptly can trigger them.
When should I call the vet about gabapentin?
Call during office hours if your cat vomits repeatedly, stops eating, or the medicine doesn’t seem to help. If gabapentin isn’t doing its job, ask your vet to adjust the plan rather than adding something from home. The usual human pain medicines, acetaminophen (paracetamol), ibuprofen and aspirin, can be deadly to cats. For after-hours help, see our cat emergency guide.
For other medicines your vet may prescribe, including the steroid prednisolone, browse our cat medications guides.
Frequently asked questions
How long does gabapentin last in cats?
Its effects usually start within an hour or two and wear off within about a day. Cats with kidney disease may clear it more slowly, so the effects can last longer.
Is gabapentin safe for older cats?
Vets often prescribe it for senior cats with arthritis. Older cats are more likely to have kidney disease, which changes how the body clears gabapentin, so your vet may check bloodwork first and adjust the plan.
Can I give my cat my own gabapentin?
No. Human capsules and liquids come in strengths and formulas that aren't made for cats, and some liquids contain sweeteners like xylitol. Only give gabapentin your vet prescribed for your cat.
Sources
Written by the CatsMed Team from the sources above. This guide isn’t reviewed by a veterinarian and isn’t a substitute for one. See how we research.
