Iron Bisglycinate
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne Iron Bisglycinate
A well-absorbed form of iron that reduces gastrointestinal side effects* An optimal delivery format for iron, which is essential for healthy red blood cells.* Resists fatigue and other effects of iron deficiency in women, athletes, and others.* NSF Certified for Sport®
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| IronFerrochel® Ferrous Bisglycinate Chelate | 25 mg |
Certifications & Testing
Other Ingredients
Hypromellose (derived from cellulose) capsule, Leucine, Microcrystalline Cellulose, Silicon Dioxide
Recommended Use
Take 1 capsule daily or as recommended by your health-care practitioner.
Warnings
ALLERGY WARNING: This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. PREGNANCY: If pregnant, consult your health-care practitioner before using this product. INTERACTIONS: There are no known adverse interactions or contraindications at publication date. OTHER WARNINGS: Accidental overdose of iron-containing products is a leading cause of f
Frequently Asked Questions
What is Thorne Iron Bisglycinate's Formulate score?
Thorne Iron Bisglycinate scores 98 out of 100 (grade A) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne Iron Bisglycinate worth it?
Thorne Iron Bisglycinate scores 98/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Thorne Iron Bisglycinate?
Each serving contains Iron (25 mg). Serving size: 1 Capsule. 60 servings per container.
How do I take iron bisglycinate?
Take 1 capsule daily or as recommended by your health-care practitioner.
Who makes Iron Bisglycinate?
Iron Bisglycinate is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Iron Bisglycinate third-party tested?
Thorne lists the following certifications and testing for this product: Gluten Free, Soy Free, Dairy Free, Natural Flavors, Natural Colors, Made in USA, NSF Certified for Sport, Thorne Verified, GMP Certified.
Related Supplements
Track iron bisglycinate in your stack
Build a personalized supplement stack free in your browser — no install. Flag dose overlaps and interactions, and keep every product scored against the latest evidence.
Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.