Minerals Most popular form
Iron Bisglycinate
Also called Ferrous bisglycinate
Iron chelated to glycine. It is well absorbed and noticeably gentler on the gut than the older salts, which makes it easier to stick with. A common first choice for anyone who gets constipated or nauseous on iron.
Best for
Sensitive stomachs
Absorption
High
Tolerability
Gentlest and least constipating
Typical timing
With vitamin C; away from calcium, coffee, and tea
How to take Iron Bisglycinate
A typical dose of Iron: Only when deficient; commonly 18–65 mg elemental iron. Best timing: With vitamin C; away from calcium, coffee, and tea. The form you choose mainly affects absorption and how easily it sits with your stomach, not the overall dose.