In China, pet supplements are reguge ferrous sulfatelated as one type of pedoes ferrous bisglycinate cause constipationt foods under the animal feed legal framework. Stakeholders aiming to enter the Chinese pet supplement marketunited home ferrous sulfate benefits must adhere to both general animal feed regulations and specialized pet food regulations. It is important to note that pet food in China specifically refers to theferrous fumarate 65 mg elemental iron feed for dogs and cats. (Reaferrous bisglycinate zinc folic acid methylcobalamind more at ChemLinked Food-pedia: China Animal Food Regulation)