Genuine motion sickness

What this tends to look like

• Fine at the car and fine in the driveway
• Drooling starts within minutes of moving, then swallowing and lip licking
• Vomiting usually within the first twenty minutes
• Much worse on winding roads, stop-start traffic, or in the cargo area
• Better if they can see out at the horizon, worse in a footwell
• Common in puppies and kittens, and many genuinely grow out of it

What is usually going on

Motion sickness is a mismatch between what the inner ear reports and what the eyes see. The balance organs register motion while the visual field, a car interior, stays still, and the brain resolves the conflict as nausea. In young animals the vestibular apparatus is still maturing, which is why puppies and kittens are so much more affected and why a good proportion improve with age without any intervention at all.

This means the most effective changes are mechanical rather than pharmacological. Facing forward with a view of the horizon reduces the conflict directly. A footwell or a high-sided crate in the cargo area maximizes it, which is why the same dog can be fine on one journey and sick on the next purely because of where they travelled. Cool moving air, a light stomach, and gentle driving all help for the same underlying reason. It is also worth separating nausea from fear, because they look similar and often coexist: an animal that has vomited in a car a few times reasonably starts to dread the car, and then you have two problems layered on each other.

What people commonly use

Educational information only — not veterinary advice. Check with your vet before starting anything new.

Where to find them

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What you can do at home

• Let them face forward with a view out at the horizon, secured on a seat rather than in a footwell
• Withhold food for a few hours before travel, but never water
• Crack a window or aim cool air at them. Fresh moving air helps genuinely, not just psychologically
• Drive as smoothly as you can and avoid winding roads where there is an alternative
• Build up with very short trips that end somewhere good, so the car is not always a long ordeal
• For cats, secure the carrier so it cannot slide, and cover three sides while leaving the front open to see out

What progress should look like

How long to give this before you conclude it is not working.

• Next journeyPosition and airflow changes work immediately. Try those before anything else, because they are free and they are the most effective.
• Three or four tripsEnough to judge whether a natural travel product is doing anything.
• Several weeksShort positive trips reduce the learned dread that builds on top of the nausea.
• MonthsMany young animals simply outgrow this as the balance system matures.

When to stop and call your vet

• Vomiting that continues after the car has stopped, which is not motion sickness
• Blood in the vomit, or vomiting so severe that a journey cannot be completed
• An adult animal that has newly developed motion sickness, which can reflect ear or neurological disease
• You need reliable travel for medical appointments and this is preventing it, in which case a prescription anti-nausea medication exists and works well