Vitamin D Poisoning in Cats

Vitamin D Poisoning in Cats - Symptoms, Causes, Diagnosis, Treatment, Recovery, Management, Cost
Vitamin D Poisoning in Cats - Symptoms, Causes, Diagnosis, Treatment, Recovery, Management, Cost

What is Vitamin D Poisoning?

Vitamin D poisoning, or Cholecalciferol poisoning, in cats occurs due to a calcium overload of the liver and kidneys. Vitamin D is quickly absorbed by the body and stored in the adipose (fat) tissue shortly after ingestion. A healthy amount of vitamin D is converted to calcifediol by the liver to be metabolized by the kidneys and distributed in the blood plasma. Just the right amount of vitamin D will aid the body’s control of the nervous system, muscles and aid in the formation of bone, as the organs regulate a proper balance of phosphorus, plus calcium. However, when large amounts of vitamin D are absorbed, the body produces too much phosphorous and calcium (hyperphosphatemia and hypercalcemia), resulting in kidney failure as well as cardiac abnormalities.

Vitamins and minerals are needed to maintain bodily functions in your cat, but an overdose of these essential elements can have ill effects. Vitamin D poisoning in cats occurs when your cat has ingested more vitamin D than the body can handle, causing a lethal overdose. Vitamin supplements, rat poison, and even some plants contain high levels of the D vitamin known as cholecalciferol. When a feline ingests high levels of cholecalciferol accidently, or if the owner overdoses the cat with vitamin D, the body is overwhelmed and the once helpful vitamin becomes a poison.

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Vitamin D Poisoning Average Cost

From 363 quotes ranging from $200 - $1,000

Average Cost

$500

Symptoms of Vitamin D Poisoning in Cats

Vitamin D poisoning in cats caused by ingestion of a pesticide, a supplement overdose, or accidental consumption, will cause the feline’s calcium levels to drastically increase. This high level of calcium, also known as hypercalcemia, can cause a mineralization (hardening) of the lungs, stomach wall, kidneys, and blood vessels. Once the high levels of calcium have caused mineralization to occur throughout the body, the feline will undergo kidney failure, complications of the heart, and internal bleeding. 

Clinical signs of vitamin D poisoning in cats will generally develop between 18 and 36 hours after ingestion. Initial symptoms of vitamin D poisoning in cats include:

  • Polydipsia (excessive thirst) 
  • Polyuria (excessive urination) 
  • Anorexia (refusal to eat)
  • Depression 

As the body reacts to the high level of vitamin D, the cat’s calcium and phosphorus serum levels rise within 12 to 24 hours after ingestion, causing secondary symptoms of: 

  • Hematemesis (internal bleeding) 
  • Vomiting 
  • Nausea 
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Causes of Vitamin D Poisoning in Cats

Vitamin D poisoning in cats is caused by accidental consumption of a vitamin D containing product or overdose of a vitamin D products, plant, or supplement. Common vitamin D containing products that cats can come in contact with and have poison potential include: 

  • Vitamin D3 rodenticide (cholecalciferol) 
  • Human medications: Medications used to treat renal failure, osteoporosis, osteomalacia, hypoparathyroidism and hypophosphatemic disorders contain high concentrations of vitamin D that could be toxic if your cat accidently ingests just one tablet. 
  • Commercial pet foods: Commercially purchased pet foods high in vitamin D have been reported in outbreaks of pet poisoning since 2010. Most pet foods have been recalled and are no longer available for purchase, but food labels advertising a high level of vitamin D should be avoided unless instructed by a licensed veterinarian. 
  • Vitamin D-containing plants: Trisetum flavescens, Solanum malacoxylon or Cestrum diurnum (jessamine or jasmine) ornamental potted plants can be tempting for a cat to chew on and are easily ingested. 
  • Vitamin D supplements: Vitamin tablets, powders and liquids sold commercially to pet owners can be toxic when used improperly. A veterinarian should always be consulted before adding a vitamin or mineral supplement to your cat’s diet, as overdose is common.  
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Diagnosis of Vitamin D Poisoning in Cats

Diagnosis of vitamin D poisoning in cats is primarily established through a physical examination and the signs the cat is presenting. The veterinarian will ask you what types of plants, pesticides, and household medications your cat could have easy access to on a daily basis. He or she will also ask you what type of medications and supplements your cat is currently taking, as he reviews your cat’s medical history. Diagnostic testing will most likely begin with a urinalysis, biochemistry profile, and complete blood count. Vitamin D toxicity will cause your cat’s phosphate and calcium levels to rise drastically. Therefore, diagnostic tests of the urine and blood will help your veterinarian in diagnosing the problem at hand. Vitamin D poisoning also causes internal bleeding as your cat’s clotting factors deplete, therefore, an anticoagulation test is also a common diagnostic test performed. 

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Treatment of Vitamin D Poisoning in Cats

Vitamin D poisoning in cats is an emergency situation and your veterinarian will want to begin treatment as soon as possible. Your veterinarian may try to induce vomiting in an attempted to remove an ingested substance before it is absorbed. If the poison has already been absorbed by the body, the doctor may try an activated charcoal which will bind to the toxin, preventing further absorption. Intravenous fluid therapy is commonly given to the cat to aid in eliminating the poison through urination and a blood transfusion may be necessary to those who have lost blood due to internal bleeding. All vitamin D poisoned felines will be hospitalized during treatment. 

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Worried about the cost of Vitamin D Poisoning treatment?

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Recovery of Vitamin D Poisoning in Cats

Unfortunately, the prognosis for vitamin D poisoning in cats is rather poor, even with treatment if symptoms have become present. They key to a cat surviving vitamin D poisoning is timing. If a pet owner is present to see the feline ingest an excessive amount of vitamin D or if you realize you have overdosed your cat with a vitamin D supplement, rush your cat to the emergency veterinary center immediately.

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Vitamin D Poisoning Average Cost

From 363 quotes ranging from $200 - $1,000

Average Cost

$500

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Vitamin D Poisoning Questions and Advice from Veterinary Professionals

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Domestic Long Hair

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Three Years

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2 found helpful

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2 found helpful

Has Symptoms

None Yet

My cat ate half of my vitamin pill is he okay? He seems normal

July 11, 2020

Owner

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Dr. Sara O. DVM

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2 Recommendations

Hello, This may be toxic to your cat. It may be best for your cat to see a vet. If your cat is vomiting or having diarrhea or acting lethargic, it would be best to see your vet. They can start your cat on medication to treat this toxicity. I hope your cat starts to feel better soon.

July 11, 2020

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Ozzy

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Domestic short hair tiger

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1 Year

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2 found helpful

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2 found helpful

Has Symptoms

Pacing

Ozzy just knocked over my bottle and before I could get him he ate maybe 3 or 4. He just ate them so he isn't having any symptoms yet. He's the size of an adult cat and I don't know how much he weighs

Sept. 16, 2018

Ozzy's Owner

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Vitamin D Poisoning Average Cost

From 363 quotes ranging from $200 - $1,000

Average Cost

$500

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