Pet Health

Vitamin D Poisoning in Dogs

Learn about vitamin D poisoning in dogs, its symptoms, treatment, and prevention tips to keep your furry friend safe and healthy. Essential info for pet owners!
Author: Veterinary Team
Dial A Vet
Updated
June 6, 2025
|
Published
June 6, 2025
A concerned dog owner examining their dog's symptoms related to vitamin D poisoning.

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Has your dog ever eaten something they shouldn’t have, leaving you in a panic? One common and potentially serious concern for pet owners is vitamin D poisoning in dogs. While vitamin D is an essential nutrient for their health, too much of it can lead to toxicity. Let’s explore the symptoms, causes, and steps you can take to protect your furry friend.

⚠️ What to Watch For

Vitamin D poisoning in dogs can cause a variety of symptoms, depending on the amount ingested and how quickly treatment begins. Early detection is crucial for effective intervention.

Common symptoms of vitamin D poisoning include:

  • Vomiting and diarrhea
  • Lethargy or weakness
  • Loss of appetite
  • Increased thirst and urination
  • Abdominal pain
  • Muscle tremors or seizures (in severe cases)

If left untreated, high levels of vitamin D can lead to kidney failure, heart issues, or even death. If your dog shows any of these signs, it’s important to act quickly.

🔍 Possible Causes

So, how does vitamin D poisoning happen? Dogs can be exposed to toxic levels of vitamin D in a variety of ways:

  • Human supplements: Multivitamins or vitamin D capsules left within reach of curious pups can be dangerous.
  • Rodenticides: Some rat and mouse poisons contain high levels of vitamin D, which can be fatal if ingested by dogs.
  • Contaminated pet food: Rare manufacturing errors in dog food can lead to unsafe levels of vitamin D.
  • Medications: Certain medications prescribed for humans, like calcitriol, can cause toxicity in dogs if accidentally ingested.

Understanding these potential sources can help you minimize your dog’s risk of exposure to harmful levels of vitamin D.

✅ What You Can Do at Home

If you suspect your dog has ingested too much vitamin D, take these immediate steps:

  • Remove the source: Safely remove any remaining supplements, food, or substances that may have caused the poisoning.
  • Monitor symptoms: Keep a close eye on your dog for any changes in behavior or physical signs of distress.
  • Hydration: Encourage your dog to drink water to help flush toxins from their system. However, avoid forcing them to drink if they refuse.

While these steps can help in the short term, vitamin D poisoning is a medical emergency that requires professional care.

💡 When to Call a Vet

Contact your vet or an emergency clinic immediately if you suspect vitamin D poisoning. Be prepared to share information about what your dog ingested, how much, and when. Bringing the packaging of the ingested product can also help your vet assess the situation more effectively.

In severe cases, your dog may require hospitalization for intravenous fluids, medications to lower calcium levels, and supportive care to prevent kidney damage. Early treatment significantly improves outcomes, so don’t delay seeking professional help.

If you’re unsure whether your dog’s symptoms are related to vitamin D poisoning, book a consultation with a trusted service like Dial A Vet for quick guidance.

FAQs

Q: How much vitamin D is toxic for dogs?
A: Toxic levels vary based on your dog’s size and the source of vitamin D, but even small amounts can be harmful. Always keep supplements, medications, and rodenticides out of reach.

Q: Can vitamin D poisoning be prevented?
A: Yes, prevention is key. Store all potential sources of vitamin D safely, monitor your dog’s diet, and avoid giving them human vitamins or supplements.

Book a $49 online vet consultation at https://www.dialavet.com for fast, expert advice.

References

While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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