Vitamin D (Cholecalciferol) Overdose
DangerVitamin D overdose causes dangerous hypercalcemia leading to kidney failure and soft tissue calcification.
Quick Answer: Is Vitamin D (Cholecalciferol) Overdose Toxic to Dogs or Cats?
Use this short answer first, then read symptoms and what to do next.
Is Vitamin D (Cholecalciferol) Overdose toxic to dogs?
Yes. Treat Vitamin D (Cholecalciferol) Overdose as an emergency risk for dogs. Call your veterinarian or a pet poison hotline right away after exposure.
Is Vitamin D (Cholecalciferol) Overdose toxic to cats?
Yes. Treat Vitamin D (Cholecalciferol) Overdose as an emergency risk for cats. Call your veterinarian or a pet poison hotline right away after exposure.
Symptoms to watch for
Vomiting, increased thirst/urination, weakness, kidney failure, cardiac issues
What should I do now?
EMERGENCY. Contact vet. Calcium monitoring and treatment needed.
Dogs
Emergency risk
Cats
Emergency risk
Risk level
Danger
Symptoms
Vomiting, increased thirst/urination, weakness, kidney failure, cardiac issues
What to do now
EMERGENCY. Contact vet. Calcium monitoring and treatment needed.
Explore Related Safety Hubs
Use these hub pages for broader dog, cat, cleaner, and emergency planning guidance.
Dog Toxicity Guide
Compare Vitamin D (Cholecalciferol) Overdose with common dog food, plant, medication, and household toxicity risks.
Open hubCat poisoningCat Toxicity Guide
See cat-specific guidance for Vitamin D (Cholecalciferol) Overdose, plants, cleaners, foods, and medication risks.
Open hubEmergency planningVet Cost Hub
Plan for emergency exams, toxin ingestion care, hospitalization, and insurance decisions.
Open hubSymptoms to Watch For
Vomiting, increased thirst/urination, weakness, kidney failure, cardiac issues
What to Do
EMERGENCY. Contact vet. Calcium monitoring and treatment needed.
Plan ahead for emergency vet bills
Poisoning, broken bones, and emergency surgery can get expensive quickly. Compare costs and accident coverage before you need it.
Pet Poisoning Emergency Checklist
A one-page checklist for symptoms, product labels, emergency contacts, and what to bring to the clinic.
Clinical References
Quick Answers
Is Vitamin D (Cholecalciferol) Overdose poisonous to dogs?
Is Vitamin D (Cholecalciferol) Overdose toxic to cats?
What symptoms can Vitamin D (Cholecalciferol) Overdose cause in pets?
What should I do if my pet ate Vitamin D (Cholecalciferol) Overdose?
Related Items
Ibuprofen is highly toxic to pets. Even one pill can cause serious kidney damage or stomach ulcers.
Extremely toxic to cats (one tablet can be fatal). Causes liver damage and red blood cell damage.
Stomach ulcers and kidney damage. Cats especially sensitive.
Can cause serotonin syndrome. Even one pill is serious.
Overdose causes dangerous calcium levels. Kidney failure.
Iron toxicity causing liver damage and metabolic acidosis.