Ethoxyquin is a synthetic antioxidant (artificially manufactured from other elements) that is approved for various uses. It is approved and regulated by the Food and Drug Administration (FDA) and the Association of American Feed Control Officials (AAFCO) for use as a preservative in animal feeds. Pet food manufacturers have been using ethoxyquin to prevent rancidity and maintain the nutritional quality of their products for more than 35 years.
Ethoxyquin remains stable at the high temperatures required to process pet foods during extrusion. It is important in protecting fats and oils from degrading, losing available calories, and becoming rancid.
Despite the fact that all studies conducted to date prove that ethoxyquin is safe for use in all animal foods when used at approved levels, rumors continue to circulate to the contrary.
Individuals who seek to discredit the use of ethoxyquin will often cite certain studies that showed toxic effects in animals fed ethoxyquin. What these individuals fail to point out is that the animals in these studies were given excessive amounts of ethoxyquin—20 to more than 50 times the maximum limit—before negative effects were exhibited.
Cats are creatures of habit and can resist diet change. It's important to completely stop feeding your cat from the table. This is best accomplished by removing the cat from the kitchen during mealtimes. Be persistent when offering dry food. Your cat may refuse to eat for several meals before deciding to give the food a try. Heating food in the microwave increases the aroma of the food and will often entice a cat to eat. Another alternative is to try mixing some wet food with the dry food, or topping it with a sauce or gravy specifically formulated for pets. Be assured that your cat eats to meet an energy need and will eventually begin to eat unless there is an underlying medical issue.
Keep in mind that your cat's stool should be small and firm. Most cases of constipation are temporary and due to dietary interruptions. Loose stools also are often temporary and can be due to dietary interruptions, as well as many other things, including an abrupt change in diet, overeating, parasites, medication, eating table scraps, viral or bacterial infections, and stress. If constipation or diarrhea persists, however, it is important to consult a veterinarian.