The FDA has received multiple consumer complaints reporting severe thiamine deficiency in cats eating certain lots of frozen and freeze-dried Quest Cat Food. See Product information section of this advisory for details on affected varieties and lot codes of Quest Cat Food.

The FDA first became aware of this issue after receiving a report from a veterinary neurologist about severe symptoms of thiamine deficiency in a cat that ate one of the affected lots of Quest Cat Food. FDA testing confirmed the food contained extremely low thiamine.

The agency tested additional Quest Cat Food lots due to additional reports of cat illnesses associated with Quest Cat Food. All eight lots tested by the FDA contained extremely low or no thiamine.

The FDA recommended that Go Raw LLC doing business as (dba) Steve’s Real Food recall eight product lots. To date, the firm has only recalled three lots. Although Steve’s Real Food has publicly stated it is stopping the sale of all Quest Cat Food until the thiamine deficiency issue has been addressed, the firm has not provided evidence to show the FDA that the remaining product lots have been removed from the marketplace and customers have been adequately notified about which products may be affected and the risks the products pose.

If you have any of the lots of Quest Cat Food listed in this advisory, the FDA recommends consulting with a veterinarian about whether to continue feeding your cat the affected products. Consumers should be aware that although the products are labeled as complete diets that fully meet a cat’s nutritional needs, they contain extremely low or no thiamine. Continued feeding could result in thiamine deficiency, which causes serious health issues in cats, including death. 

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