Toxic to cats · Medications

Is Calcium Supplements toxic to cats?

Low severity

Mildly. Severe cases are rare, but it can cause discomfort and is best kept out of reach.

Symptoms to watch for

  • vomiting
  • diarrhea
  • constipation
  • nausea
  • lethargy
  • lack of appetite
  • excessive thirst
  • excessive urination
  • weakness
  • tissue mineralization
  • acute kidney failure

How vets treat it

Contact a veterinarian or Pet Poison Helpline immediately to determine if the ingested dose is concerning based on the pet's weight and the specific product formulation.

Why it's dangerous

Ingestion of large amounts can cause transient elevations in blood calcium levels, though healthy kidneys usually maintain homeostasis; however, the addition of Vitamin D3 significantly increases absorption and risk of organ damage.

Toxic compound: Calcium

Good to know

Vitamin D3 content in many calcium supplements significantly increases the risk of toxicity and kidney failure. Cats are less likely to ingest toxic amounts due to their discriminating palate.

Sources

This page is informational and is not veterinary advice. If your pet has been exposed to something risky, contact your vet or an animal poison control line right away.

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