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THORNE

THORNE - Advanced Iron Complex - Complete Blood Support Formula* - Elemental Iron…

  • Iron
  • Capsule
  • Vitamin B9
  • 60
4.6/ 5 on Amazon4,223Amazon ratings30,000+bought last month4.4ProductDome score
  • More reviewed than 69%
Medium confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology
Best forYou have been advised to supplement iron and want a chelated, gentler formula

A chelated iron formula built with supporting B vitamins and folate for absorption, worth considering for anyone advised to supplement iron who wants a gentler capsule.

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ProductDome scorecard

How it ranks among the 59 iron we track

4.4/ 5ProductDome scoreMedium confidence
Owner satisfaction · 56% of scorecategory median 4.6★4.6

4.6★ across 4,223 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 1,900 ratings4.5

4,223 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score5.0

30,000+ bought on Amazon last month.

Data quality · 11% of score2.5

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 59 iron we track - how the scorecard works · full iron data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

Thorne's Advanced Iron Complex pairs chelated elemental iron with folate and B and C vitamins in a 60 capsule bottle, formulated for people needing broader blood support rather than iron alone. It is free of gluten, dairy and soy.

Combining iron with folate and B vitamins reflects how the body actually uses these nutrients together for red blood cell production, rather than iron being effective in isolation. The chelated form is included specifically to reduce the digestive discomfort common with standard iron supplements.

  • Chelated elemental iron complex
  • Folate and B and C vitamins included
  • Gluten, dairy and soy free
  • 60 capsules

Who it's for

Fits people whose healthcare provider has recommended iron supplementation, especially those who have had trouble tolerating standard iron pills. Not a general-purpose multivitamin, and iron supplementation without a diagnosed need can cause its own problems.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out
  • Chelated iron for gentler absorption
  • Includes folate and B and C vitamins
  • Gluten, dairy and soy free
  • 60 capsule count
What to check first
  • Iron supplements should not be taken without a confirmed need
  • No stated iron dose beyond elemental iron

Performance notes

Chelating iron to an amino acid, as this formula does, is intended to improve absorption and reduce the gut irritation that plain ferrous sulfate often causes. Folate and B vitamins are included because they work alongside iron in the body's red blood cell production process, which is the basis for calling this a blood support formula.

Specifications

BrandTHORNE
ModelSF750
FormCapsule
Supplement TypeVitamin B9
Count60
BenefitsBlood Support
FlavorUnflavored
AllergensGluten Free

How it compares

This product against the closest alternatives we track in iron.

ProductAmazon ratingRatingsProductDome score
THORNE - Advanced Iron Complex - Complete Blood Support Formula* - Elemental Iron…This product4.6 / 54,2234.4 / 5
Nature Made Iron 65 mgNATURE4.7 / 554,6154.6 / 5
Nature's Bounty Iron 65mgNature’s4.7 / 535,6004.6 / 5
Slow Fe 45mg Iron Supplement for Iron DeficiencySlow4.7 / 59,9424.6 / 5
Feosol Original Iron Supplement TabletsFeosol4.7 / 59,1004.6 / 5
Frequently asked

Questions about the THORNE SF750

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

Does Thorne Advanced Iron Complex include other vitamins?

Yes, it combines chelated iron with folate and B and C vitamins.

Is this iron supplement gluten free?

Yes, it is listed gluten, dairy and soy free.

How many capsules come in a bottle?

60 capsules.