Can I Give My Dog Human Vitamin D?

Ever thought of sliding one of your vitamin D supplements to your dog? Of course, it’s easier and saves you from the hassle of researching and buying dog specialized vitamin D supplements. No matter how easy it may seem, you should never do this.

NO, you should not give your dog Human vitamin D.

Human vitamin D supplements provide 100 percent of the daily requirement for humans, leading to overdosing of vitamin D in your dog. On the contrary, dog vitamin D supplements only provide 20 percent of the vitamin D, which is safe for your dog.

Read on to learn more that you can switch your dog’s vitamin D supplements with yours and the consequences of doing this.

Is Human Vitamin D Dangerous For Dogs?

Vitamins are absolutely essential for dogs. But as the deficiency can cause problems, so is the overdose. If you continue to supply him vitamin D regularly, then overdose can cause serious health and sickness issues. In such cases, vitamin D is dangerous for dogs.

Currently, the recommended dose of vitamin D for dogs is 500IU per kilo of food. And most human multivitamins have the lowest amount of 400IU that is available for use. So, if you’re giving your dog human vitamin D regularly or with some days gap, there are high chances of overdose.

As dogs can’t make vitamin D themselves like humans do in the sun, but that doesn’t mean you start giving him human vitamin D. It can be potentially harmful to him. So, the best way to avoid this condition is to get a recommendation from a vet regarding dog food that can fulfill your dog’s vitamin D requirements without overdosing.

Is Human Vitamin D Dangerous For Dogs?

What Are The Consequences Of Too Much Vitamin D In Dogs?

Vitamin D, being a fat-soluble vitamin, is absorbed in the fat cells of the body. Thus, your dog will have a sufficient amount of vitamin D when required without a regular supply. In case, if overdose occurs, some health issues occur that can negatively affect your dog’s life. These include:

Vitamin D Toxicity

Excessive amounts of vitamin D in your dog’s body lead to vitamin D toxicity. If not addressed immediately, it can even kill your dog. Some common signs of vitamin D toxicity are vomiting, muscle weakness, soft tissue mineralization, lameness, hypercalcemia, and anorexia.

Damage To Internal Organs

Vitamin D overdose is associated with increased calcium and phosphorus levels in your dog. Abnormal amounts of these nutrients can lead to the permanent damage of kidneys, central nervous system, cardiovascular system, digestive tract, and other internal organs.

Do All Dogs Need The Same Amount Of Vitamin D?

No, all dogs don’t need the same amount of vitamin D. It varies by a dog’s:

• Sex
• Age
• Breed
• Physical activity

For example, arctic dogs require more vitamin D than French bulldogs, whose prime activity is snoring.

Note: If you’re giving your dog a good quantity of dog food, he is likely getting the required amount of vitamin D. Dog foods are made by considering the nutritional requirements of dogs. But if you’re feeding him homemade food, then you’ll need vitamin D supplements to fulfill vitamin D requirements.

The exact amount of vitamin D that your dog needs are determined by a veterinarian. Therefore, asking him will be the best for your dog’s health rather than assuming any dosage.

What Are The Symptoms If A Dog Accidently Consumes Human Vitamin D?

If a dog’s vitamin D is a safe amount, then you don’t need to worry. As mentioned before, there is a certain amount of vitamin D that dogs can ingest without showing any signs. But if an overdose of vitamin D occurs, then you’ll observe the following signs due to vitamin D toxicity:

• Vomiting
• Lack of appetite
• Dehydration
• Frequent urination
• Excessive drooling
• Sudden/extreme weight loss

The more you’ll give human vitamin D to your dog; the higher are the chances of vitamin D toxicity due to overdose. The signs usually appear after hours to days. So, you should be conscious.

Whenever you feel even a single symptom, take your pup to a vet for diagnosis immediately. It’s crucial to save your dog’s life.

How Is Vitamin D Overdosing Diagnosed In Dogs?

First of all, you must accept that it’s a serious condition that needs the vet’s help immediately. Never try to diagnose vitamin D overdosing at home because you can’t. Only a vet can diagnose if your dog is suffering from vitamin D overdosing or not.

He’ll evaluate the signs your dog will have and ask you about the food you’re giving to your dog. After a brief discussion and observation, he can recommend the following tests:

• Blood and urine test
• IV fluids
• An ultrasound
• Decontamination

A blood test will show vitamin D levels in the blood, and a urine test accesses kidney function. Other tests provide further affirmation. After checking the tests’ reports, your veterinarian will diagnose vitamin D toxicity and the best treatment options available for quick recovery.

How Is Vitamin D Overdosing Diagnosed In Dogs?


You must have human vitamin D supplements available, and you might think that you can give them to your dog. But the truth is you can’t give your dog human vitamin D.

Human vitamin D supplements contain more vitamin D than the daily requirement of your dog. Hence, by giving him human vitamin D, you’re increasing the risk of vitamin D toxicity.

Though it begins with mild signs, vitamin D toxicity can even kill your best buddy. It can even damage his internal organs.

To ensure that you don’t overdose your dog with vitamin D, ask a vet his daily requirement of vitamin D. All dogs are different, so are their daily requirements. Based upon their sex, age, breed, and physical activity, vitamin D requirement differs significantly.

Whenever a dog consumes more than the required vitamin D, some symptoms appear that make diagnoses easy. These include vomiting, diarrhoea, dehydration, etc.

When you feel these signs, take your dog to the vet immediately for a proper and accurate diagnosis. A vet’s visit can save your dog from dying and helps in quick recovery.