Could taking cephalexin make my dog stop eating?

I've been giving my dog cephalexin as prescribed by the vet, but since starting it two days ago, she's been refusing her food. She used to gobble it all up, but now she just sniffs and walks away. Could the cephalexin be affecting her appetite, and should I be concerned about her eating less?

Embark Dog DNA Test

Recommended Product

Your dog's DNA could reveal hidden health risks.

Screen for 270+ genetic health risks and 350+ breeds. Veterinarian developed, research partner of Cornell University.

$199 USD
$139 USD
Save $60· Free US Shipping

Answer

Your dog may be experiencing a reduced appetite as a side effect of cephalexin, a common antibiotic. It's not unusual for pets to react this way. Though this can be concerning, it's often manageable with a few simple strategies.

  • Certain antibiotics, like cephalexin, can cause appetite changes.
  • This side effect is usually temporary and may resolve on its own.
  • Observing your dog's overall behavior is key to determining your next steps.

Cephalexin is an antibiotic often prescribed to treat bacterial infections, and while it's effective, some dogs may experience side effects such as decreased appetite. Give her some time and try offering smaller, more frequent meals or a different type of food to see if that helps. If her appetite continues to decline or if you notice any other concerning symptoms, it’s wise to consult with a veterinarian.

Book a consultation with a licensed vet at Dial A Vet for just $49 AUD if you're unsure or symptoms are getting worse.

Frequently Asked Questions

  • Can antibiotics affect a dog's appetite?

    Yes, antibiotics like cephalexin can temporarily decrease appetite in some dogs. This is usually a mild and temporary side effect.

  • What can I do to encourage my dog to eat?

    Try offering smaller, more frequent meals, or consider changing the flavor or type of food to entice them. Warmed food might also appear more appetizing to your dog.

  • When should I be concerned about my dog not eating?

    If your dog refuses food for more than 24–48 hours, appears lethargic, or shows other symptoms such as vomiting or diarrhea, it's important to consult a vet. Additionally, if this is an emergency, please seek immediate veterinary care.

Clinically Approved Standard by Dial A Vet Veterinary Team

Disclaimer: The customer and expert messages presented herein may have been altered with artificial intelligence or modified to enhance readability and safeguard the privacy of individuals. This content is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is experiencing a medical emergency, contact your local veterinarian or emergency animal hospital immediately. Talk to a vet now.

Next available appointment

Loading…