Petco Text Logo
Petco Pet Logo

  • Two Easy Ways to Start Earning Rewards!

My dog ate Mesulid pills. What are the side effects and what to do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 1 year and 10 months old | 60 lbs

Hello,Last night my dog ingested 8 pills of mesulid 100mg. I’m not sure if he ingested them by himself because we have 3 dogs. He seems normal... How long should I monitor him for side effects?

2 Answers

Most Helpful Answer

Image profile

Answered By Linda G, MS, DVM

Veterinarian

Published on April 26th, 2019

Hello. Mesulid was banned in the United States due to very sever side effects in people & children, so there is actually very little information available in our veterinary formularies. Based on this, I would strongly encourage you to have all 3 dogs seen by your veterinarian for base line blood work, especially looking at liver values. This may have to be monitored for several days, but if you wait to see if any of your dogs gets sick, it may be too late to provide treatment. I hope you can have them seen soon & thanks for using Petco Pet Education Center, formerly Petcoach.

Vote icon

1Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By Destini R. Holloway, DVM

    Veterinarian

    Published on

    Oh no. That was naughty. Unfortunately this medication Mesulid is not tested in pets, but b/c it is an NSAID, I would highly recommend taking Smoke in to your vet for immediate evaluation. NSAID toxicity can take up to 48 hrs to manifest, and this is a big dosage, even if it was spread out amongst all 3 dogs. Symptoms of NSAID toxicity include excessive vomiting +/- blood, diarrhea +/- blood, lethargy and lack of appetite. The vet likely will recommend bloodwork to evaluate the liver enzymes and then prescribe medication to help protect his GI tract as well as reduce further reabsorption of the drug. I hope that your pets turn out ok moving forward. Best wishes and take care!

    Vote icon

    0Pet Parents found this answer helpful

See More Answers

Related Questions

Petco Pet Education Center
Health & Wellbeing
My male dog's penis is stuck out and his scrotum has a painful rash.
Is your 11-year-old male dog experiencing a painful penis or rash? A certified vet explains potential paraphimosis urgency and why immediate care is vital.
Updated on September 23, 2025
Petco Pet Education Center
Health & Wellbeing
What fish dog food helps dry skin if my dog eats Science Diet?
Is your dog's dry skin a concern? A certified vet offers expert advice on finding the best fish-based dog food alternatives to Science Diet for essential oils.
Updated on February 04, 2026
Petco Pet Education Center
Health & Wellbeing
My sick small pet is breathing mouth open. Did I drown her feeding?
Is your pet ill, struggling to breathe, or showing stroke signs? A certified vet addresses syringe feeding worries, discusses causes, and outlines treatment options.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
Dog licking paws, fur loss, and jaw wound: Could it be allergies?
Is your Shih-Tzu crossbreed biting his feet, losing fur, or has a wound? A trusted vet explains these classic allergy signs and advises on treatments like Apoquel or medicated shampoo.
Updated on September 23, 2025
Petco Pet Education Center
Food & Nutrition
Is there a chart for dog food protein biological value and digestibility?
Dog food protein's biological value & digestibility: A vet explains why data is complex. Learn to judge quality by company reputation and your dog's health.
Updated on September 23, 2025
Petco Pet Education Center
Health & Wellbeing
Why does my puppy have bloody, mucousy stools despite diet changes?
Your 4-month-old puppy suffers from ongoing loose stools with mucus and blood. An expert veterinarian explores potential intestinal parasites and advises further fecal testing. Find answers here!
Updated on September 23, 2025
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Book Now

Sponsored