Cephalexin for Dogs Dosage By Weight Chart

Cephalexin (brand name Keflex) is an antibiotic prescribed to treat bacterial infections in both dogs and cats. Though it is generally a very safe drug for both species, some pet owners report their dog or cat experiencing side effects after taking cephalexin. We will be taking a look at cephalexin dosage and side effects.

Cephalexin for Dogs: Dosage and Side Effects

Cephalexin for dogs reviews

When you see that your dog has an infection, it’s important to treat it right away so that it won’t spread to other dogs in your home. There are several different types of infections that can affect your pet and each one requires a different treatment plan. Most people start with antibiotics like cephalexin because they’re considered safe for use on pets.

The FDA categorizes this drug as “Safe and Effective” for use in animals. The side effects of using cephalexin for dogs include diarrhea, vomiting, and loss of appetite.

Cephalexin has a very good reputation among dog owners. Here are some of the best Cephalexin reviews:

“Last year I bought a bottle of Cephalexin for dogs at my vet’s office and gave it to my dog. Within one week she stopped having infections completely. She is now almost four years old and has never had another ear infection or any other health problems since then.”

“My dog had been having a lot of skin infections and I was looking for something that would help him. I found Cephalexin on the internet and decided to give it a try. He has been on it for a week now and no more problems with his skin!”

“Cephalexin for dogs is a great product, and it’s the best way to treat bacterial infections in dogs. I’ve had my dog on this medication for 10 days now and he seems to be doing very well. He doesn’t have any more issues with his ears, which was one of the main reasons we started him on this medication. I would recommend this product to anyone that has an animal with an ear infection.”

“I’ve always had dogs and have always treated them with antibiotics when they get sick. Cephalexin is a common antibiotic that works well for most issues, but it does have some side effects. For example, it can cause vomiting and diarrhea in dogs.”

How much cephalexin can I give my dog?

The cephalexin dose and length of treatment depend on the severity of the infection, but a typical dosage is 10 mg per pound of body weight twice daily for 28 days.

A dog should not be given cephalexin if he has a history of allergic reactions to any antibiotics in the cephalosporin family.

What are the side effects of cephalexin in dogs?

Cephalexin’s side effects include mild gastrointestinal upset, loss of appetite, vomiting, and diarrhea. Serious side effects include allergic reactions and seizures. If you notice any unusual side effects contact your veterinarian immediately.

My dog is lethargic after taking Cephalexin?

Generally, it’s very effective, but like all antibiotics, it can have side effects. The drug may cause several side effects in your dog such as diarrhea, lethargy, vomiting, loss of appetite, and so on.

Dogs will show signs of lethargy if they are not feeling well because they are not eating or drinking as much as usual. Dogs with serious conditions will also not want to interact with their owners or other dogs, which could be an indication that something is wrong with them but usually isn’t dangerous unless it persists for longer than two days.

Did cephalexin kill my dog?

Although cephalexin is generally considered safe to use in dogs, there have been reports of serious side effects when it was accidentally given in large doses. Acute overdose may cause anemia and damage to the kidneys, nervous system, and even death.

Conclusion of Cephalexin for dogs

Cephalexin is a broad-spectrum antibiotic, meaning it can kill a wide variety of bacteria. It works by inhibiting bacterial proteins that are essential for cell wall formation and growth.

Cephalexin has very few side effects when given to dogs at recommended doses. The most common side effect is an upset stomach, which usually goes away after the first dose. Other side effects include diarrhea and vomiting. If your dog develops severe diarrhea or vomiting while taking cephalexin, contact your veterinarian because it could be serious and require treatment.

It is important that your pet takes this medication for the full course of treatment. If you have concerns about your pet taking Cephalexin, talk to their veterinarian about it before beginning treatment.


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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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