THORNE Iron Bisglycinate 25 mg Capsules

Overview

Thorne Iron Bisglycinate delivers 25 mg of iron per serving in a bisglycinate form, chosen for easier absorption with less gastrointestinal irritation than standard iron salts, in a 60-serving, vegetarian, dairy, gluten and soy-free capsule that carries NSF Certified for Sport status.

Iron bisglycinate is a chelated form that is generally better tolerated than ferrous sulfate, which is the reasoning behind Thorne's enhanced-absorption claim in the title, though it is a formulation choice rather than a result from independent lab testing in this listing. The NSF Certified for Sport mark matters specifically to competitive athletes, since it screens for banned substances, a step not every supplement brand takes. At 25 mg per serving, the dose sits below the higher-strength iron products aimed at diagnosed deficiency.

• 25 mg iron bisglycinate per serving
• NSF Certified for Sport
• 60 servings per bottle
• Dairy, gluten and soy free, vegetarian

Who it's for

Fits athletes who need a sport-certified iron supplement clear of banned substances, and anyone who has had stomach trouble on standard iron tablets and wants a gentler chelated form. Not the pick for someone who has been told by a doctor to take a higher iron dose than 25 mg.

Pros and cons

Performance notes

Iron bisglycinate binds the mineral to glycine, a structure generally associated with easier absorption and less gut irritation than ferrous sulfate or ferrous fumarate. The NSF Certified for Sport status means each batch is screened for substances banned in competitive sport, relevant mainly to tested athletes. At 60 servings and 25 mg per serving, the bottle covers roughly two months at a once-daily dose.

Specifications