Key takeaways:
Dramamine (dimenhydrinate) is an antihistamine that is used in dogs to manage nausea from motion sickness or vestibular disease.
The main side effect dogs experience while taking Dramamine is sedation. Some dogs may also have dry mouth or trouble emptying their bladder completely.
Dramamine is available over the counter, but always consult with a veterinarian before giving it to your dog. Dramamine is not safe for all dogs, and it can be harmful if they get too much.
Dogs who experience motion sickness feel miserable. They’ll let you know how they feel with a variety of symptoms, including:
Vomiting
Drooling
Lip licking
Panting
Yawning
Whining
Restlessness
Fortunately, motion sickness can be managed in dogs with medications like Dramamine (dimenhydrinate).
Read on to learn what Dramamine is, how it works, potential side effects, and more. Let’s dive in.
Common names | Dimenhydrinate (Dramamine, Gravol) |
What it treats | Nausea from motion sickness or vestibular disease |
How it comes (forms) | Tablet, chewable tablet, oral liquid |
Dosage | Depends on your dog’s weight |
Common side effects | Drowsiness, dry mouth, upset stomach |
Average cost |
Dramamine is primarily used in dogs to prevent motion sickness during car rides, airplane rides, or boat rides.
It is sometimes prescribed to prevent nausea in dogs with vestibular disease. This condition causes a sudden loss of balance. But Dramamine is typically not the first medication veterinarians recommend for vestibular disease.
Dramamine is a brand-name version of an antihistamine called dimenhydrinate. It works for dogs by blocking histamine receptors in the gut and brain. This helps a dog feel more balanced and less nauseated.
Dramamine belongs to the same class of medications as diphenhydramine (Benadryl), but it works differently. Dramamine is available over the counter in human preparations.
The standard dosage of Dramamine for dogs is 2 mg to 4 mg per pound of your dog’s body weight every 8 hours. A veterinarian will need to calculate the best dosage for your dog. If your dog weighs less than 6 lbs., it’s especially important to get the right Dramamine dosage from your veterinarian.
Dog motion sickness: You’re not the only one who can get motion sickness. If your pup gets nauseated when they ride in the car, this article can help.
Keep calm, and travel on: If your pup gets anxious when they travel, you’re not alone. Learn some great strategies to take the stress out of your dog’s next trip.
Dog vomiting: Motion sickness is one of many reasons a dog may vomit. Learn about the most common causes and how you can help a dog who’s throwing up.
Dramamine works best if it is given to dogs 30 to 60 minutes before a car ride or other nausea-inducing event. Dramamine may take longer to work in dogs who have liver disease.
It’s best to give dramamine on an empty stomach. Limiting food intake before car rides can be helpful for preventing nausea. If your dog won’t take the medication, you can hide it in a small treat. You can also talk to your veterinarian about compounding Dramamine into a tasty liquid.
If you miss giving your dog a dose of Dramamine, give the next dose as soon as you remember. Then adjust your dog’s dosing schedule so that doses remain at least 8 hours apart.
If it is close to the time that the next dose is due, skip the missed dose. Then give your dog’s next dose at the regular time. Never double up doses to catch up on the missed dose.
The most common side effect of Dramamine in dogs is drowsiness or sedation. This side effect is actually helpful for most car rides. Other side effects can include:
Dry mouth
Increased thirst
Urinary retention (holding urine)
Hyperactivity instead of sedation
If you notice symptoms of stomach upset in your dog after giving Dramamine, stop using it, and talk to a veterinarian.
Don’t give Dramamine to dogs if they are going to be engaging in activities that require alertness and focus. If you are taking your dog to training, for example, talk to a veterinarian about other anti-nausea medications that don’t cause drowsiness.
In general, dramamine is well tolerated by most dogs with a low risk of side effects. A small percentage of dogs have an allergy to Dramamine. This can result in the following symptoms:
Swollen face
Hives
Difficulty breathing
Rash
If you notice signs of an allergic reaction, discontinue Dramamine immediately. Then call a veterinarian for advice.
Dramamine is a fairly short-acting medication, meaning it usually wears off within a few hours. Once the medication is out of your dog’s system, symptoms should resolve fairly quickly. But it may take longer in dogs who have liver or kidney disease.
Dramamine should be used with caution in dogs with:
A history of seizures
Glaucoma
Respiratory disease
An enlarged prostate
Dramamine may interact with other dog medications, including:
Other antihistamine medications, like diphenhydramine
Benzodiazepines, such as diazepam and lorazepam
Opioids
Muscle relaxants, including gabapentin
Anti-seizure medications, including phenobarbital
Sedatives or anesthesia medications
Anticholinergic medications, such as atropine or glycopyrrolate
Levothyroxine
Omeprazole or other proton pump inhibitors
Heart medications, including beta blockers, diuretics, and ACE inhibitors
Allopurinol
SSRI (selective serotonin reuptake inhibitor) antidepressants, such as fluoxetine and sertraline
Tricyclic antidepressants, such as amitriptyline and clomipramine
Metoclopramide
Talk to a veterinarian before giving your dog Dramamine. This is especially important if your dog is taking other medications. A vet will be able to determine if your dog can safely take Dramamine with their other medications.
Dramamine (dimenhydrinate) is an effective medication that can help motion sickness in dogs. It is available over the counter as a human medication, and it is safe for dogs when given at the correct dosage. Ask a veterinarian for the correct Dramamine dosage for your dog to make sure it will be safe and effective. Dramamine is well tolerated by most dogs, but it can cause side effects such as sedation and dry mouth. Dramamine does interact with several medications, so talk to a veterinarian before giving it to your dog.
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Marmulak, T., et al. (2014). Over-the-counter medications for pets. America’s Pharmacist.
Merterns, A. M., et al. (2023). Current definition, diagnosis, and treatment of canine and feline idiopathic vestibular syndrome. Frontiers in Veterinary Science.
Newfield, A. (2016). Preventing motion sickness in dogs. Today’s Veterinary Nurse.