Vitamin D Toxicity

There has recently been a recall for dog foods containing high levels of vitamin D. These potentially toxic levels can cause a variety of organ, nerve, muscle, and skeletal problems. Vitamin D’s main effect is to increase calcium absorption from the gut and kidneys. It also acts in concert with hormones from the parathyroid gland to start pulling calcium from the bones. Think of those as the two keys to a lock that have to be turned simultaneously in order to work. All of this calcium that gets pulled then goes into the bloodstream and gets distributed to muscles, nerves, and major organs in the body. This can easily lead to muscle and bone diseases. If you think your pet food might be affected by the recall, here’s what you can do:

• Check the FDA link below to see if your brand was affected
• Discontinue feeding that item
• Report the food item(s) to the FDA
• If you suspect your food might be affected, and it is not on the FDA’s list, report any suspected food to your local FDA Consumer Complaint Coordinator
• Talk to your vet about preventative or corrective measures for adverse health effects related to that food

Vitamin D toxicity can affect all animals. This recall primarily affects dog foods, but we want to take the time to remind you to check on your cat, farm animal, or reptile’s diets. Food is the best preventative measure for health. In cases like vitamin D, it is important to make sure you are able to supply your pet with the right amount and form. Be sure to take into account environmental factors that affect vitamin D intake.
 
VCA hospitals: https://vcahospitals.com/know-your-pet/vitamin-d-poisoning-in-dogs
FDA fast facts, list of brands: https://www.fda.gov/animalveterinary/newsevents/ucm627485.htm
Vitamin D levels for a 500kg working horse: https://aaep.org/sites/default/files/issues/proceedings-11proceedings-z91001113120p.pdf
Reptile supplements: http://www.reptilesmagazine.com/Supplemental-Nutrition-for-Your-Reptiles/

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Authored by Nick Linzner

Nicholas Linzner grew up in Northridge, CA and has always cared deeply for animals and their interactions with the environment. He moved to San Luis Obispo, CA to complete a B.S. in Animal Science, with a minor in Equine Science in 2018. Shortly before graduating, he joined the team at RAHU in order to learn more about integrative veterinary medicine and contribute towards the growth of the company.