Advanced Iron Complex (formerly Ferrasorb)
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne Advanced Iron Complex (formerly Ferrasorb)
Iron, essential B vitamins, and vitamin C for comprehensive nutritional support for anemia* Advanced Iron Complex provides iron in chelated form for optimal absorption and vitamin C to enhance iron’s absorption, plus the active forms of folate and vitamins B6 and B12 – offering comprehensive nutritional support for anemia.*
Score Breakdown
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Ingredients per Serving
| Ingredient | Amount |
|---|---|
| IronFerrochel Ferrous Bisglycinate Chelate | 108 mg |
| Vitamin B12Methylcobalamin | 900 mcg |
| Vitamin B6Pyridoxal 5'-Phosphate | 15 mg |
| Folate400 mcg as L-5-Methyltetrahydrofolate from L-5-Methyltetrahydrofolic Acid, Glucosamine Salt | 2001 mcg |
| Vitamin CAscorbic Acid | 45 mg |
Certifications & Testing
Other Ingredients
Hypromellose (derived from cellulose) capsule, Leucine, Microcrystalline Cellulose, Silicon Dioxide
Recommended Use
Take 1 capsule one to three times 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 5-methyltetrahydrofolate (5-MTHF) supplementation is not recommended concurrent with methotrexate cancer therapy, as it can interfere with methotrexate's anti-neoplastic ac
Frequently Asked Questions
What is Thorne Advanced Iron Complex (formerly Ferrasorb)'s Formulate score?
Thorne Advanced Iron Complex (formerly Ferrasorb) scores 90 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 Advanced Iron Complex (formerly Ferrasorb) worth it?
Thorne Advanced Iron Complex (formerly Ferrasorb) scores 90/100 (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 Advanced Iron Complex (formerly Ferrasorb)?
Each serving contains Iron (108 mg), Vitamin B12 (900 mcg), Vitamin B6 (15 mg), Folate (2001 mcg), and more. Serving size: 1 Capsule. 60 servings per container.
How do I take advanced iron complex (formerly ferrasorb)?
Take 1 capsule one to three times daily or as recommended by your health-care practitioner.
Who makes Advanced Iron Complex (formerly Ferrasorb)?
Advanced Iron Complex (formerly Ferrasorb) is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Advanced Iron Complex (formerly Ferrasorb) third-party tested?
Thorne lists the following certifications and testing for this product: Gluten Free, Soy Free, Dairy Free, Natural Flavors, Natural Colors, Thorne Verified, GMP Certified, Manufactured in the USA.
Related Supplements
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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.