Sales of supplements for dogs, cats and other pets are on the rise, but veterinarians are starting to take a closer look at some of the products.

Japan Apricot Co., a supplement producer in Takasaki, Gunma Prefecture, began selling Mistol, a product made from plum extract, a specialty of the prefecture, to veterinarians late last year.

The supplement was originally designed for humans, but the company decided to make a version for pets after finding some indirect benefits.