Chelated zinc is a type of zinc supplement. It contains zinc that’s been attached to a chelating agent. Chelating agents are chemical compounds that bond with metal ions (such as zinc ...

For example, a study in 15 adults found that chelated zinc (as zinc citrate ... giving 0.34 mg per pound of body weight (0.75 mg per kg) of iron bisglycinate (chelated) daily raised blood iron ...