Not Safe

Not SafeVet ReviewedReviewed by Dr Alex Crow BVetMed MRCVSsupplement

Not Safe for Dogs

Medium dog serving: never

Key warning: all vitamin D supplements, vitamin D-fortified foods in large quantities

Can Dogs Have Vitamin D? No — Extremely Toxic, Causes Fatal Kidney Failure

This food is NOT safe for dogs. Keep it away from your pet.

Vitamin D supplementation is extremely dangerous for dogs. Even small amounts above therapeutic levels cause rapid calcium accumulation leading to kidney failure and death. Rat poison frequently uses vitamin D as its toxic agent.

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Warning Signs & Symptoms

Hypercalcemia: vomiting, weakness, excessive thirst, kidney failure, cardiac abnormalities, death within days.

If Your Dog Ate This

Call vet or ASPCA Poison Control 888-426-4435 immediately. Vitamin D toxicity causes rapid kidney failure.

What to Avoid

all vitamin D supplements, vitamin D-fortified foods in large quantities

Preparation & Serving

Never supplement without vet prescription and blood monitoring. Call vet immediately if any vitamin D supplement consumed.

Did you know?

Vitamin D toxicity is used as a rodent poison because rodents and dogs are uniquely sensitive to vitamin D excess. Humans have a much wider therapeutic window — the dose that helps a human is still far below toxic while for dogs the margin is dramatically narrower.

Portions & nutrition

Toxic dose (per kg body weight): 0.1mg/kg causes toxicity
Serving (small dog): never without vet prescription
Serving (medium dog): never
Serving (large dog): never
Calories (per 100g): 0
Safe frequency: Never without vet prescription

Source

Source: ASPCA

What You Need to Know

Vitamin D toxicosis is one of the most serious supplement toxicities in dogs. Dogs are uniquely sensitive to vitamin D excess — amounts that are safe for humans can be lethal. Rat poison products like Quintox use vitamin D as the active ingredient. Even vitamin D-fortified foods consumed in large quantities can cause toxicity. Never supplement without direct vet guidance and blood monitoring.

Breed-Specific Notes

All dogs at serious risk — there is no wide safety margin.

Not sure what to do next? Read our emergency guide What to Do If Your Dog Eats Something Toxic

Want to know what other dangers are hiding in your home?

Take the 60-second kitchen safety assessment to find out your dog's risk score.

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If Your Dog Ate This — Act Now

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Frequently asked questions

Is Vitamin D for Dogs safe for dogs?: No, Vitamin D for Dogs is not safe for dogs. Vitamin D supplementation is extremely dangerous for dogs. Even small amounts above therapeutic levels cause rapid calcium accumulation leading to kidney failure and death. Rat poison frequently uses vitamin D as its toxic agent.
What happens if a dog eats Vitamin D for Dogs?: If a dog eats Vitamin D for Dogs, they may experience: Hypercalcemia: vomiting, weakness, excessive thirst, kidney failure, cardiac abnormalities, death within days.
How much Vitamin D for Dogs can a dog eat?: Vitamin D toxicosis is one of the most serious supplement toxicities in dogs. Dogs are uniquely sensitive to vitamin D excess — amounts that are safe for humans can be lethal. Rat poison products like Quintox use vitamin D as the active ingredient. Even vitamin D-fortified foods consumed in large quantities can cause toxicity. Never supplement without direct vet guidance and blood monitoring.

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Medical Disclaimer: This information is for educational purposes only. Always consult a licensed veterinarian before making dietary changes for your pet.