I understand the skepticism on Consumer Labs, I've seen the criticisms concerning their tendency to be biased.....
Having said that I have seen the reports concerning our pharmaceuticals and vitamin supplements being outsourced to China and India in order for the pharmaceutical companies to increase profits..........India and China have very serious and extremely poor sanitary conditions in their manufacturing facilities. They are rarely inspected, are filthy, and are severely lacking in quality control. The vast majority of imported drugs and supplements are NOT tested when they come back into the US for distribution. Some of the produced products are questionable if they even contain their active ingredients in therapeutic dosages or if it's even in there at all , it's also not unusual to contain contaminants, including but not limited to lead....
The FDA is already stretched thin conducting inspections in the US , so to include inspections in foreign countries,the rate is almost nil. Over 93% of the facilities have not been inspected. This not only puts our supplements in question but it also puts human otc'ers and prescription products in question if they are safe from contaminants or if the even contain their active ingredients.
Since Pet Tabs are manufactured in India I would be very cautious about this products safety, regardless of Consumer Labs findings......