Dog Motion Sickness: Signs, Remedies & Travel Tips (2026)
Motion sickness in dogs is common, usually starts with drooling and lip-licking long before any vomiting, and is very treatable. Most puppies grow out of it by about 12 months. Adult dogs who still get sick can almost always travel comfortably with a mix of conditioning, smart trip planning and, where needed, a vet-prescribed anti-nausea medicine.
Quick answer: If your dog drools, licks its lips, yawns or goes quiet and restless within minutes of moving, it is probably motion sickness. Feed a light meal several hours before travel, keep the dog facing forward in a secure crate or harness, keep the air cool, and ask your vet about maropitant (Cerenia), the drug approved for preventing vomiting due to motion sickness in dogs. Never give human travel-sickness tablets or sedatives without a vet's advice.
This guide covers the signs, the causes, what vets prescribe, and what changes when the trip is a flight, a ferry or a cruise. It draws on Pet Holiday Club's rules base of 1,661 pet travel requirements, 131 airlines and 238 countries, so the travel advice matches what carriers and border officials actually check.
Why dogs get motion sickness
Motion sickness happens when the inner ear senses movement that the eyes and body do not agree with. The brain reads the mismatch as a problem and triggers nausea. Four things make a dog more likely to suffer:
Age. Puppies are more prone because the balance structures of the inner ear are not fully developed. VCA Animal Hospitals' veterinarians note that most puppies outgrow it by about one year old.
Conditioning. Dogs that only ride in a car once or twice a year, usually to the vet, often link travel with stress. That anxiety alone can cause nausea in adult dogs.
A bad first experience. A puppy that was frightened or sick on early trips may keep associating travel with that feeling.
Medical causes. Middle or inner ear infections and vestibular disease can cause or worsen nausea. If an adult dog suddenly starts getting sick on routes it used to handle, see your vet.
The practical takeaway: in puppies, treat the nausea and protect the habit so it does not turn into lifelong travel anxiety. In adults, assume anxiety is part of the picture until proven otherwise.
Signs of nausea in dogs (before they vomit)
Vomiting is the last sign, not the first. Spotting nausea early lets you stop, get air in, or ask your vet for a better plan next time.
Stage | What you may see |
Early | Excessive drooling, lip-licking or smacking, repeated swallowing, yawning |
Building | Restlessness, whining, pacing in the crate, or going unusually still and listless |
Late | Retching, then vomiting; some dogs also have diarrhoea or refuse food after the trip |
Two signs are easy to misread. A dog that yawns and licks its lips is often nauseous, not tired. A dog that lies flat and silent may be feeling the worst, not coping best.
At borders, this matters beyond comfort. Pet Holiday Club's arrival rules for Great Britain and the Netherlands both warn that active signs of illness can lead to denial of entry, quarantine or return at the owner's expense. A vomiting dog at an inspection point invites questions, so prevention is worth the effort on international trips.
How to prevent motion sickness before a trip
Most dogs improve with a few simple changes, made before you reach for medication.
Feed light and early. Give a small meal several hours before you leave rather than a full bowl just before. Your vet can tell you the right gap for your dog's size and any medication timing. Keep water available.
Face forward and stay still. A secure, well-ventilated crate or a crash-tested harness on the back seat limits sway. Dogs that can see out of the front window often cope better than dogs watching the side windows blur past.
Keep it cool and fresh. Lower the windows a few centimetres or run the air conditioning. Stuffy, warm air makes nausea worse.
Drive smoothly. Gentle braking, fewer sharp bends and a stop every 2 hours for a short walk all help.
Retrain the association. Start with the engine off, then short trips to somewhere fun, like a park, not the vet. Build up slowly over two to four weeks before a long journey.
Make the crate a safe place. If your dog will travel in a crate on a flight, ferry or ship, crate training at home pays off twice: less stress and less nausea. See our crate training guide.
Pack for the worst case anyway: absorbent pads under the bedding, wipes, a spare blanket, water and bags. A clean, dry dog arrives calmer.
Medication for dog motion sickness: what vets use
If conditioning is not enough, there are effective medicines. Your vet chooses the drug and the dose for your dog's weight, age and health. This guide does not give doses.
Option | What it does | What to know |
Maropitant (Cerenia) | Prescription anti-nausea drug, FDA-approved to prevent vomiting due to motion sickness in dogs | Labelled for dogs 16 weeks and older for this use. Usually given about 2 hours before travel. In two US clinical trials of dogs with a history of motion sickness, it cut vomiting by 86.1% when given about 2 hours before a car ride, and by 76.5% when given about 10 hours before |
Antihistamines (e.g. meclizine, dimenhydrinate) | Over-the-counter human drugs some vets use off-label | Can reduce nausea and cause drowsiness. Only use the product and dose your vet names: some human formulas contain extra ingredients that are harmful to dogs |
Anti-anxiety medication | Prescription drugs for dogs whose nausea is mostly fear | Treats the anxiety, not the motion. Needs a vet trial run at home before travel day |
Ginger, pheromone sprays, calming supplements | Low-risk add-ons | Evidence is limited. Use alongside training, not instead of it |
One thing to remember: anti-nausea drugs treat motion sickness, not anxiety. If your dog still pants and trembles but no longer vomits, the remaining problem is fear, and that needs training or a different medicine.
Do not sedate your dog for a flight
The American Veterinary Medical Association advises against sedating pets for air travel because it can increase the risk of heart and breathing problems. Many airlines will refuse a pet that appears sedated, and some ask you to sign a statement that it has not been. Snub-nosed breeds are at higher risk still; see our guide to airlines that accept bulldogs, pugs and French bulldogs.
An anti-nausea drug like maropitant is not a sedative, but tell your airline, ferry or cruise line about any medication your dog is taking, and carry the prescription.
Motion sickness by type of travel
The same dog can be fine in a car and miserable on a ferry. What changes is how much you can see and reach your dog during the trip.
By car
The car is where most dogs first get sick, and the easiest place to fix it. You control the speed, the stops and the air. Use the prevention steps above, plan a break every 2 hours, and keep your dog restrained: an anxious, nauseous dog moving around a car is a safety risk for everyone.
By plane
On a flight you cannot stop and you may not be able to see your dog at all. Pet Holiday Club's rules base shows that pets entering Great Britain by air must travel as cargo, unless they are recognised assistance dogs or on an approved private charter. For cargo flights, the rules base recommends arriving at the airport at least 4 hours before international departure, which means a long day before take-off.
That makes preparation more important:
Use an airline-compliant crate with absorbent bedding; see our IATA crate requirements guide.
Pack dry food and water in sealed containers, as the rules base lists for travel day.
Ask your vet about anti-nausea medication well before the flight, and do a trial at home first.
Never sedate (see above). Budgeting for cargo? Our guide to how much it costs to fly with a dog breaks down the fees.
By ferry
Ferries rock more than cars and planes, and on many routes your dog stays below deck. Where your dog rides depends on the operator and the crossing:
Operator / route | Where your dog travels | Motion sickness tip |
DFDS, Newcastle–Amsterdam (overnight) | Pet cabin with you | Book a pet cabin and choose a mid-ship cabin on a lower deck where movement is gentler, if available |
DFDS, short crossings | Stays in your vehicle | Park in shade where possible, leave a window gap, and give anti-nausea medication before boarding if your vet advises it |
Alaska Marine Highway | Car deck only, in a vehicle or approved carrier | On long sailings, pet calls let you visit roughly every 8 hours, so pack absorbent pads and water |
BC Ferries | Designated pet areas; outer-deck areas on some routes, seasonal | Fresh air on the outer deck helps; keep your dog on a short leash in the marked area |
For UK and European sailings, our dog-friendly cruises and ferries from the UK and Europe guide compares pet cabins, fees and entry rules route by route.
Taking a cruise with a motion-sick dog
Very few cruise lines take pet dogs, and on the main ocean option you will not be beside your dog when the sea gets rough. On Cunard's Queen Mary 2, Pet Holiday Club's carrier data shows dogs stay in one of 24 kennels on Deck 12, never in your cabin, with a kennel master on duty and no vet on board. Cunard asks for your dog's feeding, medical and medication details when you book, so agree an anti-nausea plan with your vet before you reserve a kennel from $1,300 per crossing. River cruises are calmer water, and some, like 1AVista Reisen's dog cruises on the Rhine and Danube, let dogs sleep in your cabin. Compare every option in our guide to pet-friendly cruises in 2026. If you travel with an assistance dog, the rules are different: see can service dogs go on cruise ships.
Motion sickness, anxiety, or something else?
Motion sickness and travel anxiety often look alike, and many dogs have both. The pattern tells you which one is driving it.
Clue | Points to motion sickness | Points to anxiety |
When it starts | After the vehicle moves | Before the trip, as soon as the dog sees the car, crate or bags |
Main signs | Drooling, lip-licking, vomiting | Panting, trembling, whining, trying to escape |
Response to anti-nausea medicine | Clear improvement | Little change |
Age | Often a puppy | Any age, often after a bad experience |
Call your vet promptly if:
Your dog keeps vomiting after the journey ends, or vomits blood
Nausea starts suddenly in an adult dog that used to travel well
You see a head tilt, circling, loss of balance or flicking eyes, which can signal vestibular disease or an ear problem
Your dog is a young puppy, a senior or has a known health condition and seems weak or lethargic after travel
Your dog may have eaten something it should not have before the trip
These are not signs of ordinary travel sickness and need a vet's examination.
Frequently Asked Questions
Can dogs get seasick? Yes. Boats, ferries and ships cause motion sickness in dogs in the same way cars do, often more, because the movement is slower and rolling. The signs and treatments are the same.
How long does motion sickness last in dogs? Mild nausea usually settles within a few hours of the journey ending. If vomiting continues afterwards, call your vet.
Do puppies grow out of car sickness? Most do, typically by about 12 months, as the inner ear matures. Keep early trips short and positive so the nausea does not turn into lasting anxiety.
What can I give my dog for motion sickness? Ask your vet. Maropitant (Cerenia) is the prescription drug approved to prevent vomiting due to motion sickness in dogs. Some vets use antihistamines off-label. Never give human travel-sickness tablets without your vet's say-so.
Should I feed my dog before a long journey? Give a small meal several hours before you leave rather than a large one just before. Always keep water available.
Can I sedate my dog for travel? Not for flights: the AVMA advises against it and many airlines refuse sedated pets. For car or ferry trips, only use a medicine your vet prescribes after a trial at home.
