What is Ethoxyquin?

Ethoxyquin is an antioxidant used as a food preservative. [1]

Health Disputes

There has been some speculation that ethoxyquin in pet foods might be responsible for certain health problems. To date, the US FDA has only found a verifiable connection between ethoxyquin and buildup of protoporphyrin IX in the liver, as well as elevations in liver-related enzymes in some animals. It has been shown to cause mortality in fish. [1]