Product Image

Extra-Strength Chelated Iron 27 mg

Bluebonnet
4.8
★ ★ ★ ★ ★
(4087 ratings)
Iron 27 mg
Product Image
Score86

A clean, well-dosed bisglycinate capsule is a strong targeted iron choice, provided the user has established a need.

How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:
Energy
Hair Health
Productivity Boost

Score 86

A clean, well-dosed bisglycinate capsule is a strong targeted iron choice, provided the user has established a need.

How scoring works

Also available as

1 option
18 mg • 90 Capsule(s) servings Iron 18 mg • 90 Capsule(s) • 90 servings $13.20 ($0.14 per serving)
$14.80($0.16 per serving)
Vitacost
$ 14.80
Amazon
$ 14.80
Pure Formulas
$ 14.80
Daily Vita
$ 14.80
iHerb
$ 14.80
Report prices

Analysis

One capsule provides 27 mg iron as ferrous bisglycinate chelate. The premium form and clear amount make it easy to assess for a documented iron need.

No vitamin C or blood-building B vitamins accompany the mineral. The stripped-down design avoids distractions, but it does not support other nutrient-related causes of fatigue or shedding.

Energy, concentration, fitness, and hair benefits depend on low iron being the limiting factor. People with adequate stores should not expect a direct boost and face unnecessary exposure to a substantial dose.

Who is it for
  • Adults with confirmed low iron or increased need
  • Users seeking ferrous bisglycinate
  • People who prefer a one-capsule formula
Best for
  • Targeted iron supplementation
  • Deficiency-related fatigue
  • Low-iron-related hair shedding

Pros

  • Uses ferrous bisglycinate chelate
  • Effective 27 mg amount
  • Single-capsule serving
  • Focused formula with favorable value

Cons

  • No vitamin C
  • No folate or B12
  • Does not address non-iron causes of fatigue
  • Dose is too targeted for casual use

Warnings

  • Use the 27 mg dose for a confirmed need because excess iron can accumulate
  • Iron can cause constipation, nausea, or stomach upset even in chelated form
  • Keep capsules away from children because accidental iron ingestion is dangerous

Nutrient quality

91 Highest impact

Ferrous bisglycinate is a well-absorbed form that is often gentler than basic iron salts. The focused formula provides an effective targeted amount without unrelated active padding.

Ingredient transparency

85 Highest impact

The active amount and form are disclosed without a hidden blend. Full intake directions and non-active ingredients are not available in the supplied facts.

Customer satisfaction

72 High impact

The aggregate satisfaction metric is strong and supported by a useful volume of ratings. Specific firsthand feedback is absent, so recurring complaints and purpose fit cannot be assessed.

Value for money

93 Highest impact

The focused formula and a low serving cost support practical value. No meaningful absorption or blood-forming cofactors are included.

Report analysis

Goals

Energy
Energy
Impact
Highest effect
A- Goal FitA+ Strength of SupportC CoverageA Formula Quality
Iron · 27 mg

Chelated iron provides an effective amount in a gentle, well-absorbed form for deficiency-related fatigue. The one-capsule formula is simple and fully disclosed.

No vitamin C, folate, or B12 is included, so supporting cofactors must come from the diet or other products. Iron should not be used as a general energy booster without evidence of low iron because unnecessary intake can be harmful.

Study evidence
Iron Supportive 74 studies
Hair Health
Hair Health
Impact
Highest effect
A- Goal FitA Strength of SupportD CoverageB+ Formula Quality
Iron · 27 mg

Chelated iron is strongly aligned with hair shedding caused by low iron stores. It is unlikely to help when iron status is already adequate.

The amount and form are clearly disclosed, and the one-capsule serving is practical. Because unnecessary iron can cause harm, ferritin or other appropriate testing should guide ongoing use.

Study evidence
Iron Disputed 25 studies
Productivity Boost
Productivity Boost
Impact
High effect
B- Goal FitB+ Strength of SupportF CoverageA- Formula Quality
Iron · 27 mg

Iron bisglycinate can improve energy and concentration when iron deficiency is present. It is not a general productivity aid for people with normal iron stores.

The 27 mg amount uses a chelated form that is generally better tolerated than basic iron salts. Unneeded iron can cause constipation, nausea, and harmful accumulation, so use is best guided by bloodwork or a clear clinical need.

Study evidence
Iron Supportive 69 studies

Ingredients

IngredientAmount per serving
Iron (Ferrous Bisglycinate Chelate)
 27 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Sugar Free No Allergies Vegetarian
Report overview
Iron (Ferrous Bisglycinate Chelate) · 27 mg OverallScore87
B Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value

The chelated iron form supplies an effective daily amount in one vegetable capsule. Its simple formula lacks vitamin C and blood-building B vitamins, so users must obtain those cofactors elsewhere. The serving cost remains favorable for a premium iron form.

View ingredientView products
Loading alternative details
88 Performance

Gentle Iron 28 mg

Nature's Bounty
<p>Ferrous bisglycinate is paired coherently with vitamin C, folate, and vitamin B12 for absorption and blood-building support. Compared with the original focused chelate, the added vitamin C and blood-building cofactors provide a more complete formula for a confirmed need.</p>
87 Performance

Vegan True Iron Support

Source Naturals
<p>Iron bisglycinate, vitamin C, folate, and vitamin B12 create a focused formula with clearly disclosed active amounts. Compared with the original focused chelate, the added vitamin C and blood-building cofactors provide a more complete formula for a confirmed need.</p>
85 Performance

Iron Complex

Advanced Nutrition by Zahler
<p>Ferrochel iron, vitamin C, methylcobalamin, folate, and histidine form a well-specified formula for confirmed iron need. Compared with the original focused chelate, the added vitamin C and blood-building cofactors provide a more complete formula for a confirmed need.</p>
89 Budget

Iron 18 mg

NOW
<p>Iron bisglycinate provides a well-absorbed, generally gentle form at a useful maintenance amount with clear dosing. Compared with the already useful original chelate, the alternative offers another clear dose or format with strong everyday value.</p>
86 Budget

Albion Chelated Ferrochel Iron 18 mg

Swanson Ultra
<p>TRAACS Ferrochel supplies a well-defined chelated form at a useful lower-end amount in a clean formula. Compared with the already useful original chelate, the alternative offers another clear dose or format with strong everyday value.</p>
89 Budget

Chelated Iron 27 mg

Carlson
<p>Iron bisglycinate provides a well-absorbed, generally gentle form at a meaningful targeted amount. Compared with the already useful original chelate, the alternative offers another clear dose or format with strong everyday value.</p>
88 Value

Chelated Iron

Solgar
<p>Iron bisglycinate provides a well-absorbed, generally gentle form in a simple focused capsule. Compared with the original, the well-specified chelate provides a similarly gentle, focused option with competitive practical value.</p>
88 Value

Chelated Iron 27 mg

Carlson
<p>Iron bisglycinate provides a clearly disclosed, generally gentle form at a useful targeted amount. Compared with the original, the well-specified chelate provides a similarly gentle, focused option with competitive practical value.</p>
83 Value

Iron Complex

NOW
<p>Chelated iron, vitamin C, folate, and vitamin B12 form a coherent formula, though dong quai may increase bleeding risk with anticoagulant or antiplatelet medicines. Compared with the original, the well-specified chelate provides a similarly gentle, focused option with competitive practical value.</p>
Report alternatives

Sources

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

  1. Clinical evaluation of iron treatment efficiency among non-anemic but iron-deficient female blood donors: a randomized controlled trial.
    Waldvogel S; Pedrazzini B; Vaucher P; Bize R; Cornuz J; Tissot JD; Favrat B · BMC medicine · 2012
    Randomized trial154 participantsEnergy forIron
  2. Daily iron supplementation on cognitive performance in primary-school-aged children with and without anemia: a meta-analysis.
    Guo XM; Liu H; Qian J · International journal of clinical and experimental medicine · 2015
    Meta-analysis1,825 participants5 studies pooledProductivity Boost forIron
  3. Iron plays a certain role in patterned hair loss.
    Park SY; Na SY; Kim JH; Cho S; Lee JH · Journal of Korean medical science · 2014
    Case-control study420 participantsHair Health forIron
  4. Intravenous iron versus blood transfusion for postpartum anemia: a systematic review and meta-analysis.
    Caljé E; Groom KM; Dixon L; Marriott J; Foon R; Oyston C; Bloomfield FH; Jordan V · Systematic reviews · 2024
    Meta-analysis4,196 participantsEnergy forIron
  5. Scientific Opinion on the substantiation of a health claim related to iron and maintenance of normal hair growth pursuant to Article 13(5) of Regulation (EC) No 1924/2006.
    EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) · EFSA journal. European Food Safety Authority · 2026
    Guideline / consensusHair Health forIron
  6. The impact of brain iron accumulation on cognition: A systematic review.
    Spence H; McNeil CJ; Waiter GD · PloS one · 2020
    Systematic review41 studies pooledProductivity Boost forIron
  7. Iron deficiency, general health and fatigue: results from the Australian Longitudinal Study on Women's Health.
    Patterson AJ; Brown WJ; Powers JR; Roberts DC · Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2001
    Cohort studyEnergy forIron
  8. Iron Status, Anemia, and Iron Interventions and Their Associations with Cognitive and Academic Performance in Adolescents: A Systematic Review.
    Samson KLI; Fischer JAJ; Roche ML · Nutrients · 2022
    Systematic review50 studies pooledProductivity Boost forIron
  9. A Hospital-based Study to Determine Causes of Diffuse Hair Loss in Women.
    Malkud S · Journal of clinical and diagnostic research : JCDR · 2015
    Observational study180 participantsHair Health forIron
  10. 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
  11. 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
  12. Iron status in diffuse telogen hair loss among women.
    Moeinvaziri M; Mansoori P; Holakooee K; Safaee Naraghi Z; Abbasi A · Acta dermatovenerologica Croatica : ADC · 2010
    Case-control study60 participantsHair Health forIron
  13. 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
  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. Low iron stores: a risk factor for excessive hair loss in non-menopausal women.
    Deloche C; Bastien P; Chadoutaud S; Galan P; Bertrais S; Hercberg S; de Lacharrière O · European journal of dermatology : EJD · 2008
    Cross-sectional study5,110 participantsHair Health forIron
  16. Maternal Fatigue after Postpartum Anemia Treatment with Intravenous Ferric Carboxymaltose vs. Intravenous Ferric Derisomaltose vs. Oral Ferrous Sulphate: A Randomized Controlled Trial.
    Bombač Tavčar L; Hrobat H; Gornik L; Preložnik Zupan I; Vidmar Šimic M; Pečlin P; Kavšek G; Lučovnik M · Journal of clinical medicine · 2024
    Randomized trial300 participantsEnergy forIron
  17. Efficacy of iron and/or zinc supplementation on cognitive performance of lead-exposed Mexican schoolchildren: a randomized, placebo-controlled trial.
    Rico JA; Kordas K; López P; Rosado JL; Vargas GG; Ronquillo D; Stoltzfus RJ · Pediatrics · 2006
    Randomized trial602 participantsProductivity Boost forIron
  18. Retrospective Review of 2851 Female Patients With Telogen Effluvium: A Single-Center Experience.
    Karakoyun Ö; Ayhan E; Yıldız İ · Journal of cosmetic dermatology · 2025
    Cohort study2,851 participantsHair Health forIron
  19. 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
  20. Randomized, double-blind, placebo-controlled trial of iron supplementation in female soldiers during military training: effects on iron status, physical performance, and mood.
    McClung JP; Karl JP; Cable SJ; Williams KW; Nindl BC; Young AJ; Lieberman HR · The American journal of clinical nutrition · 2009
    Randomized trial219 participantsProductivity Boost forIron
  21. Hair Loss After Metabolic and Bariatric Surgery: a Systematic Review and Meta-analysis.
    Zhang W; Fan M; Wang C; Mahawar K; Parmar C; Chen W; Yang W; Global Bariatric Research Collaborative · Obesity surgery · 2021
    Meta-analysis2,538 participants18 studies pooledHair Health forIron
  22. Hypophosphatemia attenuates improvements in vitality after intravenous iron treatment in patients with inflammatory bowel disease.
    Bjorner JB; Kennedy N; Lindgren S; Pollock RF · Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2024
    Randomized trial97 participantsEnergy forIron
  23. Cognitive Performance in Indian School-Going Adolescents Is Positively Affected by Consumption of Iron-Biofortified Pearl Millet: A 6-Month Randomized Controlled Efficacy Trial.
    Scott SP; Murray-Kolb LE; Wenger MJ; Udipi SA; Ghugre PS; Boy E; Haas JD · The Journal of nutrition · 2019
    Randomized trial140 participantsProductivity Boost forIron
  24. 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
  25. Intravenous iron for the treatment of fatigue in nonanemic, premenopausal women with low serum ferritin concentration.
    Krayenbuehl PA; Battegay E; Breymann C; Furrer J; Schulthess G · Blood · 2011
    Randomized trial90 participantsEnergy forIron
  26. Effects of iron and n-3 fatty acid supplementation, alone and in combination, on cognition in school children: a randomized, double-blind, placebo-controlled intervention in South Africa.
    Baumgartner J; Smuts CM; Malan L; Kvalsvig J; van Stuijvenberg ME; Hurrell RF; Zimmermann MB · The American journal of clinical nutrition · 2013
    Randomized trial321 participantsProductivity Boost forIron
  27. 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
  28. 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
  29. Iron-deficiency anaemia and its effect on worker productivity and activity patterns.
    Edgerton VR; Gardner GW; Ohira Y; Gunawardena KA; Senewiratne B · British medical journal · 1980
    Non-randomized trialProductivity Boost forIron
  30. Alopecia Areata Different View; Heavy Metals.
    Ozaydin-Yavuz G; Yavuz IH; Demir H; Demir C; Bilgili SG · Indian journal of dermatology · 2024
    Case-control study61 participantsHair Health forIron
  31. 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
  32. 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
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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