Read moreOf the 20 joint supplements marketed to people and their pets that were selected by ConsumerLab.com and tested by independent laboratories, 40 percent failed to contain what their labels promised.
All the problems popped up among products that claimed to contain chondroitin, a key and pricey ingredient. Of 11 such brands, eight came up short on the substance, which is purported to inhibit enzymes that break down the cartilage in joints.
For instance, Natures Plus Ultra Maximum Strength Chondroitin 600, which touts highest quality chondroitin, turned out to have no chondroitin at all.
Even pets are getting shorted. Nutri-Vet Nutritionals Hip & Joint Soft Chews, which is marketed for dogs, contained less than 1 percent of its claimed chondroitin and less than half the promised glucosamine, a substance thought to stimulate cartilage production.
Man. I really don't like the idea of the FDA getting involved in this kind of thing, but this REALLY sucks.