The 2026 Quest cat-food warning is not specific to senior cats; it covers cats that ate identified products with extremely low or absent thiamine. For an older cat, stop feeding affected food, watch closely for illness, and seek immediate veterinary advice if warning signs appear. Senior cats deserve extra observation because they may hide illness. Cornell advises contacting a veterinarian about physical or behavioral changes instead of assuming they are normal signs of aging.
Official resources:
- Read the official guidance from FDA — Use this primary source to verify the official guidance.
- Read the official guidance from Cornell — Use this primary source to verify the official guidance.
Table of Contents
- Which cats and foods are affected?
- How should you check your cat food?
- Which warning signs need immediate attention?
- How should you monitor a senior cat?
- How can you keep an older cat comfortable?
Which cats and foods are affected?
Risk depends on what a cat ate, not its age. The FDA's March 13, 2026 advisory covers identified Quest products with dangerously low thiamine, a nutrient subject to a minimum standard in cat food. FDA testing found all eight tested lots far below AAFCO's 5.6 mg/kg minimum.
Two frozen chicken lots had no detected thiamine. The FDA also received multiple reports of severe thiamine deficiency in cats that ate certain lots. The products were labeled as a "complete diet," but continued feeding can cause serious illness or death. Senior cats are not the only cats at risk, although age-related health or mobility issues may make changes harder to notice or manage.
How should you check your cat food?
The affected foods were sold nationwide in beige zip-top bags. Freeze-dried products came in 10-ounce bags, while frozen products came in 2-pound bags.
Use this check before serving another meal: An unreadable code is an important limitation. The FDA advises caution with Quest food that cannot be identified by lot, because it may not provide adequate thiamine.
- Confirm whether the package is a Quest cat-food product.
- Check whether it is freeze-dried or frozen and matches the listed package size.
- Look for a readable lot code.
- Stop feeding an identified affected product.
- If the code is unreadable, use caution rather than assuming the food is safe.
Which warning signs need immediate attention?
Seek immediate veterinary advice if your cat has eaten the food and develops any of these signs: Do not wait for several symptoms to appear. Early dietary intervention typically resolves deficiency signs, but a veterinarian should guide care when illness is suspected.
- Reduced appetite
- Vomiting
- A bent or flexed neck
- Weakness
- A wobbly gait
How should you monitor a senior cat?
Observe changes from your cat's usual behavior, movement, appetite, and balance. Write down what changed and when, including whether the cat vomited, fell, circled, or refused food. Changes can be subtle in an older cat.
According to Cornell's guidance on senior cats, owners should report physical or behavioral changes to a veterinarian rather than dismissing them as aging. A familiar routine does not rule out illness. Compare the cat with its own normal habits, not with general expectations for old age.
How can you keep an older cat comfortable?
Keep food, clean water, and a low-sided litter box easy to reach. This reduces unnecessary effort for a cat that may have arthritis or difficulty moving. Maintain a predictable routine and limit avoidable environmental stress.
Cornell's older-cat care guidance notes that reduced adaptability can make changes harder for senior cats. Comfort measures support the cat but do not replace veterinary advice. FDA said Go Raw/Steve's Real Food had recalled only three of the eight tested lots and had not demonstrated that the other lots were removed or that customers were adequately notified.