Iron Bis-Glycinate 25 helps to prevent iron deficiency.Β It contains the preferred bisglycinate form, a chelated iron that is easy to absorb, gentle on the stomach and doesnβt cause gastrointestinal upset. No need to give up on iron supplements because they canβt be tolerated. CanPrevβs Iron Bis-Glycinate 25 boosts iron and lets the body stay upset free.