Hydroxyzine for Dogs Side Effects

Hydroxyzine, also known by its brand name Atarax, is a medication that is commonly used to treat a variety of conditions in dogs, including anxiety, itching, and allergic reactions. While this medication is generally considered safe and effective, there are a number of potential side effects that pet owners should be aware of.

One of the most common side effects of hydroxyzine in dogs is drowsiness. Many dogs will become sleepy or lethargic after taking the medication, which can make it difficult for them to stay alert and active. This side effect typically fades as the medication is metabolized by the body, but in some cases, it may last for several days.

Another potential side effect of hydroxyzine in dogs is dry mouth. This can occur when the medication causes the salivary glands to produce less saliva, which can make it difficult for dogs to swallow or chew their food. This side effect is typically mild and can be addressed by providing your dog with plenty of water to drink.

Vomiting and diarrhea are also possible side effects of hydroxyzine in dogs. These symptoms may occur when the medication irritates the stomach or intestines, or if the dog’s body is unable to tolerate the medication. If your dog is experiencing these symptoms, it is important to contact your veterinarian to determine the best course of action.

In some rare cases, hydroxyzine may cause more serious side effects in dogs. These may include changes in behavior, such as aggression or restlessness, or neurological symptoms such as seizures or tremors. If you notice any unusual behavior or symptoms in your dog after administering hydroxyzine, it is critical to seek immediate medical attention.

It’s crucial to note that even though hydroxyzine is generally considered safe for dogs, it should not be used without the guidance and supervision of a veterinarian. A veterinarian will be able to determine the proper dosage and frequency of administration for your pet, as well as monitor for any potential side effects.

Overall, hydroxyzine is a useful medication for dogs with certain conditions, but it’s essential to be aware of the potential side effects that may occur. If you notice any unusual symptoms in your dog after administering hydroxyzine, it’s always best to consult with your veterinarian. With proper guidance and monitoring, this medication can provide relief for your pet and improve their quality of life.


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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