Does Cerenia Cause Drowsiness in Dogs?

Cerenia is a popular medication used to treat vomiting and motion sickness in dogs. It is a powerful anti-nausea medication that works by blocking the action of certain chemicals in the brain that causes vomiting.

One common side effect of Cerenia is drowsiness. Many pet owners have reported that their dogs become drowsy or lethargic after taking Cerenia. This can be a concern for some pet owners, especially if their dog is an active breed or needs to be alert for any reason.

But is it true that Cerenia causes drowsiness in dogs? And if so, how long does this side effect last? Let’s take a closer look at the research and ask the experts to find out.

According to the manufacturer’s website, drowsiness is a common side effect of Cerenia in dogs. In clinical studies, drowsiness was reported in about 10% of dogs treated with Cerenia. The drowsiness usually occurred within the first few hours after taking the medication and usually lasted for a few hours.

However, not all dogs will experience drowsiness after taking Cerenia. Some dogs may be more sensitive to the medication and may experience drowsiness more frequently or for a longer period of time.

Veterinarians recommend that pet owners observe their dogs closely after administering Cerenia and watch for any signs of drowsiness or lethargy. If your dog becomes drowsy after taking Cerenia, it is important to keep them in a safe, quiet place where they can rest and recover. Do not allow your dog to engage in any activities that could potentially harm them, such as going for a walk or playing with other pets.

In addition to drowsiness, Cerenia can also cause other side effects in dogs, such as loss of appetite, diarrhea, and constipation. These side effects are usually mild and resolve on their own within a few days. If you notice any unusual side effects in your dog after taking Cerenia, it is important to contact your veterinarian right away.


Hannah Elizabeth is an English animal behavior author, having written for several online publications. With a degree in Animal Behaviour and over a decade of practical animal husbandry experience, Hannah's articles cover everything from pet care to wildlife conservation. When she isn't creating content for blog posts, Hannah enjoys long walks with her Rottweiler cross Senna, reading fantasy novels and breeding aquarium shrimp.

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