Iron bisglycinate is a chelate, where iron is bound to the amino acid glycine. This structure protects the iron from degradation in the stomach, allowing it to reach the intestines intact for optimal absorption.

Iron and copper have a reciprocal relationship in the body; increased iron intake can lead to decreased copper levels and vice versa. Adding copper helps maintain a normal balance.

Preferably not. Iron is absorbed more efficiently when taken every other day. This is because the body has a natural regulatory mechanism that reduces iron absorption with daily intake. With every-other-day supplementation, absorption is better regulated.