Cephalexin for Dogs Side Effects Peeing

Cephalexin is a commonly prescribed antibiotic for dogs that is used to treat a wide range of bacterial infections. It is part of a class of antibiotics known as cephalosporins, which work by inhibiting the growth and replication of bacteria.

One of the most common side effects of cephalexin in dogs is increased urination, also known as polyuria. This occurs when the dog’s body excretes more urine than normal, leading to frequent trips to the bathroom and a larger volume of urine being produced.

The exact cause of polyuria in dogs taking cephalexin is not well understood, but it is thought to be related to the antibiotic’s effect on the kidney. Cephalexin is eliminated from the body primarily through the kidneys, and it is possible that the drug may cause an increased filtration rate or a change in the way the kidneys process urine.

While polyuria is generally considered a mild side effect of cephalexin, it can lead to more serious complications if left untreated. For example, dogs with polyuria may be more prone to dehydration, bladder infections, and kidney problems.

If your dog is experiencing increased urination while taking cephalexin, it is important to bring this to the attention of your veterinarian. They may recommend adjusting the dosage of the antibiotic or switching to a different medication.

In some cases, polyuria may be a symptom of a more serious underlying condition, such as diabetes or kidney disease. Your veterinarian may recommend further testing to rule out these possibilities.

It is also important to ensure that your dog has access to plenty of fresh water during this time, as increased urination can lead to dehydration. You may also want to consider adjusting your dog’s diet to include more high-water content foods, such as fruits and vegetables.

Overall, cephalexin is a safe and effective antibiotic for dogs when used as directed. However, if your dog is experiencing increased urination or any other side effects, it is important to bring this to the attention of your veterinarian as soon as possible. With proper monitoring and management, most dogs can continue to take cephalexin without experiencing any serious complications.


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.

Leave a Reply

Your email address will not be published.

Back to Top