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Chelated Iron 27 mg

Carlson
4.8
★ ★ ★ ★ ★
(4525 ratings)
Iron 27 mg
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Score89
A high-quality 27 mg bisglycinate tablet with exceptional value for monitored long-term supplementation.
How scoring works
Quantity:250 Tablet(s) • (250 servings)
Goals:
Hair Health
Productivity Boost
Energy

Score 89

A high-quality 27 mg bisglycinate tablet with exceptional value for monitored long-term supplementation.
How scoring works
$16.92($0.06 per serving)
iHerb
$ 16.92
Amazon
$ 16.92
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Analysis

A 27 mg serving of iron bisglycinate provides a substantial dose in a chelated form. The single-active label avoids ambiguity and makes the product easy to compare with other iron supplements.

Bisglycinate is often selected when standard ferrous salts cause digestive problems. No vitamin C or other blood-cell nutrients are included, so the formula is best for someone who wants iron alone.

The 250-tablet supply provides exceptional value and reduces the need for frequent reordering. Because the supply can last a long time, periodic review of iron status is especially important.

Who is it for
  • Adults with confirmed low iron
  • People wanting a large supply of chelated iron
Best for
  • Longer-term monitored iron use
  • Strong value in a bisglycinate form

Pros

  • 27 mg iron bisglycinate chelate
  • Transparent single-active formula
  • Generally well-tolerated form
  • Exceptional value and supply size

Cons

  • No vitamin C is included
  • No folate or vitamin B12
  • Large supply may outlast the clinical need
  • Still can cause digestive symptoms

Warnings

  • Recheck iron status during use because excess iron can accumulate once the original need is corrected.
  • Separate iron from levothyroxine and tetracycline or quinolone antibiotics according to professional guidance.
  • Store the large bottle away from children because accidental iron ingestion is dangerous.

Nutrient quality

95 Highest impact

A favorable chelated form and meaningful dose provide strong core quality. Missing absorption and blood-forming cofactors are the main limitation.

Ingredient transparency

88 Highest impact

The active form and amount are clear without a proprietary blend. Missing full directions and non-active ingredients leave only modest disclosure gaps.

Customer satisfaction

73 High impact

The supplied average is very strong and supported by very large response volume. No comment-level evidence is available to assess repeated complaints or alignment with the intended use.

Value for money

98 Highest impact

A favorable chelate, useful amount, and simple formula provide strong value. Lack of supporting cofactors is a modest trade-off rather than a major cost problem.

Report analysis

Goals

Hair Health
Impact
Highest effect
A- Goal FitA+ Strength of SupportD CoverageA Formula Quality
Iron · 27 mg

Chelated iron directly addresses low ferritin, a major nutrition-related cause of diffuse hair shedding. Evidence strongly supports correcting iron deficiency, but routine iron does not improve hair when iron status is adequate.

The 27 mg amount is substantial enough for deficiency-oriented support. The single-ingredient design is coherent, but 27 mg of iron can cause digestive effects and should be reserved for a demonstrated or likely need.

Study evidence
Iron Disputed 25 studies
Productivity Boost
Impact
Highest effect
B- Goal FitA+ Strength of SupportC- CoverageA Formula Quality
Iron · 27 mg

Chelated iron may improve energy and concentration when iron deficiency limits oxygen delivery. It is not a general productivity enhancer for people with adequate iron stores.

The 27 mg bisglycinate amount is clearly disclosed in a well-absorbed form. Unnecessary iron can cause constipation or contribute to excess iron, so people with hemochromatosis or normal iron status should not treat it as a routine focus aid.

Study evidence
Iron Supportive 69 studies
Energy
Impact
High effect
B+ Goal FitB+ Strength of SupportD- CoverageA Formula Quality
Iron · 27 mg

Iron bisglycinate is a well-absorbed form that may be gentler than common iron salts. The clearly disclosed amount is appropriate for targeted iron support when increased need or deficiency has been established.

The formula lacks vitamin C, folate, and vitamin B12, so users must obtain those supporting nutrients elsewhere. Iron should not be taken casually when stores are adequate because excess can cause digestive symptoms and harmful accumulation.

Study evidence
Iron Supportive 74 studies

Ingredients

IngredientAmount per serving
Iron (Iron Bisglycinate Chelate)
27 mg
Gluten Free Adults 18–50
Report overview
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

Iron bisglycinate chelate provides a premium form at an effective 27 mg dose. The single tablet is convenient, though it lacks vitamin C, folate, or vitamin B12 to support absorption and red blood cell nutrition. A very low serving cost makes it attractive for people who obtain those cofactors elsewhere.

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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Large-dose intravenous ferric carboxymaltose injection for iron deficiency anemia in heavy uterine bleeding: a randomized, controlled trial.
    Van Wyck DB; Mangione A; Morrison J; Hadley PE; Jehle JA; Goodnough LT · Transfusion · 2010
    Randomized trial477 participantsEnergy forIron
  2. The Effect of Parenteral or Oral Iron Supplementation on Fatigue, Sleep, Quality of Life and Restless Legs Syndrome in Iron-Deficient Blood Donors: A Secondary Analysis of the IronWoMan RCT.
    Macher S; Herster C; Holter M; Moritz M; Matzhold EM; Stojakovic T; Pieber TR; Schlenke P; Drexler C; Amrein K · Nutrients · 2021
    Randomized trial176 participantsEnergy forIron
  3. Ferric carboxymaltose vs. oral iron in the treatment of pregnant women with iron deficiency anemia: an international, open-label, randomized controlled trial (FER-ASAP).
    Breymann C; Milman N; Mezzacasa A; Bernard R; Dudenhausen J; FER-ASAP investigators · Journal of perinatal medicine · 2018
    Randomized trial252 participantsEnergy forIron
  4. Effect of iron therapy on fatigue symptoms in non-anaemic iron deficient women of reproductive age- A Randomized Controlled Trial.
    Sultana N; Bajwa FA; Sikandar MZ; Haider MM; Majeed T · JPMA. The Journal of the Pakistan Medical Association · 2026
    Randomized trial164 participantsEnergy forIron
  5. Intravenous iron isomaltoside treatment of women suffering from severe fatigue after postpartum hemorrhage.
    Holm C; Thomsen LL; Langhoff-Roos J · The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians · 2019
    Randomized trial85 participantsEnergy forIron
  6. The Association Between Alopecia Areata and Iron Deficiency Anemia: A Large-Scale Population-Based Case-Control Study.
    Davidovici B; Drutin Y; Ben-Tov A; Mimouni D; Wohl Y · Journal of personalized medicine · 2026
    Case-control study100,203 participantsHair Health forIron
  7. Iron Deficiency and Nonscarring Alopecia in Women: Systematic Review and Meta-Analysis.
    Treister-Goltzman Y; Yarza S; Peleg R · Skin appendage disorders · 2022
    Meta-analysis10,029 participants36 studies pooledHair Health forIron
  8. Comparative Analysis of Postoperative Hair Loss and Micronutrient Deficiencies After One-Anastomosis Gastric Bypass Versus Sleeve Gastrectomy.
    Chinisaz F; Maleki T; Najjari K; Miratashi Yazdi SA · Obesity surgery · 2026
    Cohort study261 participantsHair Health forIron
  9. Assessment of Serum Ferritin Levels in Female Patients With Telogen Effluvium.
    Thamotharan N; Harikumar MV; Sundaram M; Swaminathan A; Rangarajan S · Cureus · 2026
    Cross-sectional study100 participantsHair Health forIron
  10. Diagnosis and treatment of female alopecia: Focusing on the iron deficiency-related alopecia.
    Lin CS; Chan LY; Wang JH; Chang CH · Tzu chi medical journal · 2023
    Cohort study155 participantsHair Health forIron
  11. Effects of daily iron supplementation in primary-school-aged children: systematic review and meta-analysis of randomized controlled trials.
    Low M; Farrell A; Biggs BA; Pasricha SR · CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2014
    Meta-analysis7,089 participants32 studies pooledProductivity Boost forIron
  12. Consumption of Iron-Biofortified Beans Positively Affects Cognitive Performance in 18- to 27-Year-Old Rwandan Female College Students in an 18-Week Randomized Controlled Efficacy Trial.
    Murray-Kolb LE; Wenger MJ; Scott SP; Rhoten SE; Lung'aho MG; Haas JD · The Journal of nutrition · 2017
    Randomized trial150 participantsProductivity Boost forIron
  13. Functional consequences of iron supplementation in iron-deficient female cotton mill workers in Beijing, China.
    Li R; Chen X; Yan H; Deurenberg P; Garby L; Hautvast JG · The American journal of clinical nutrition · 1994
    Randomized trial80 participantsProductivity Boost forIron
  14. The Effect of Iron-Fortified Lentils on Blood and Cognitive Status among Adolescent Girls in Bangladesh.
    Barnett AL; Wenger MJ; Yunus FM; Jalal C; DellaValle DM · Nutrients · 2023
    Randomized trial359 participantsProductivity Boost forIron
  15. Daily iron supplementation for improving anaemia, iron status and health in menstruating women.
    Low MS; Speedy J; Styles CE; De-Regil LM; Pasricha SR · The Cochrane database of systematic reviews · 2016
    Meta-analysis8,506 participants67 studies pooledProductivity Boost forIron