The Food and Drug Administration is warning pet owners that several brands of dry dog food contain too much vitamin D, which can be toxic in high amounts, increasing their risk of kidney failure.
The FDA said that dog food sourced from a single manufacturer, but sold by multiple brands, contained "excessive, potentially toxic levels of vitamin D." Recalls have been initiated for impacted food from Nutrisca, Natural Life Pet Products, Sunshine Mills, Inc., Kroger brand, and ELM dog foods.
ABC News reports An FDA spokeswoman said they can't disclose the name of the manufacturer because it is protected information.
One of the companies, Nutrisca, said on its website that it received complaints from three pet owners who said their dogs showed vitamin D toxicity and that the excess levels were due to a "formulation error."
Another brand, Sunshine Mills, said its impacted products were distributed in the U.S. as well as exported to Japan, Puerto Rico, Colombia, Israel, Canada and South Korea.
Dogs that consume too much vitamin D can show symptoms like vomiting, loss of appetite, increased thirst or weight loss, according to the FDA. Toxic levels can cause kidney failure or death.
For specific information about the types of food impacted by recalls check the FDA's website.