Iron 18 mg

Iron 18 mg

NOW4.7 (28,981 ratings)
Format:Capsule Quantity: 120 Capsule(s) · 120 servings
Goals

Product analysis

75 out of 100

Iron 18 mg offers an inexpensive way to help meet iron needs, which may ease tiredness or hair shedding when low iron is the cause.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality40

The iron form is clearly identified, but a more precise quality comparison is unavailable. The named form alone does not establish greater energy or performance benefits.

Ingredient Transparency100

The iron amount and form are clearly disclosed. That makes the supplement straightforward to compare with other iron options.

Value For Money100

The iron comes at a very low serving cost. The value of taking it still depends on whether extra iron meets a nutritional need.

Customer Satisfaction91

Customer feedback is generally positive. A sizeable set of reviews supports that impression, without proving effectiveness or safety.

Product Focus62

Iron is most relevant when low stores contribute to tiredness, poor concentration or hair shedding. The serving amount does not establish whether a shortage is present or what replacement amount is appropriate.

Format
Capsule
Container
120 Capsule(s)
Per serving
$0.03
Customer rating
4.7 · 28,981 ratings
Report analysis

Goals

Impact
High effect
B- Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Iron · 18 mg

Iron can help tiredness and weakness caused by iron deficiency. The 18 mg serving provides a nutritional amount, but it cannot be equated with higher-dose clinical regimens used in selected women with low ferritin. Extra iron does not establish added energy in adults whose iron intake and status are adequate.

How this product is rated for Energy

Ingredient fit74

The included ingredient has a direct connection to the selected energy comparison, without unrelated active ingredients diluting that focus.
Goal fit
The included ingredient has a direct connection to the selected energy comparison, without unrelated active ingredients diluting that focus.
Dose adequacy
The supplied serving makes a partial contribution toward the relevant amount comparisons; a serving does not establish the repeated regimens used in trials.

Pathways0

No direct energy-related mechanism receives a saved contribution here; nutritional-gap support remains distinct.
Depth
No direct energy-related mechanism receives a saved contribution here; nutritional-gap support remains distinct.
Breadth
No energy-related mechanism reaches the saved coverage threshold, despite any nutritional or preparation-specific connection.

Evidence98

Iron supplies the strongest saved evidence connection; its findings remain specific to the exercise outcomes, preparation and regimen studied.
Evidence strength
Iron supplies the strongest saved evidence connection; its findings remain specific to the exercise outcomes, preparation and regimen studied.
Studied preparation
The saved preparation match is favorable; it does not remove differences in exercise context, duration or individual response.

Formulation logic100

No specified ingredient conflict is triggered by the supplied facts; this finding is separate from personal suitability.
Partner coverage
No missing required partner limits the included ingredients under the supplied findings; this does not establish added benefit from combining them.
Conflicts
No specified ingredient conflict is triggered by the supplied facts; this finding is separate from personal suitability.
Effective doses
All ingredients included in this comparison meet its minimum amount threshold; that threshold is not proof of clinical effectiveness.
Study evidence
Iron Supportive 74 studies
Hair Health
Impact
Moderate effect
B- Ingredient FitF PathwaysB EvidenceA+ Formulation Logic
Iron · 18 mg

Iron may help with diffuse hair shedding when low iron is the cause. Replacing a shortage is different from taking iron to increase growth when you already get enough. The amount in a serving can't tell you whether low iron is behind your hair loss or what replacement regimen would be appropriate.

How this product is rated for Hair Health

Ingredient fit74

Iron provides a focused nutrient contribution, with hair benefits dependent on the relevant nutritional context.
Goal fit
Iron is the only identified active ingredient relevant here.
Dose adequacy
Iron supplies 18 mg per selected serving; this amount alone doesn't establish a hair-growth response.

Pathways0

The relevant contribution concerns nutrient sufficiency rather than a specific hair-growth mechanism.
Depth
The relevant contribution concerns nutrient sufficiency rather than a specific hair-growth mechanism.
Breadth
The ingredients do not demonstrate a broad set of distinct hair-growth effects.

Evidence78

Iron may help with deficiency-related shedding; routine regrowth when iron levels are adequate is unclear.
Evidence strength
Iron may help with deficiency-related shedding; routine regrowth when iron levels are adequate is unclear.
Studied preparation
The iron preparation doesn't remove the distinction between correcting a deficiency and routine hair regrowth.

Formulation logic100

The relevant ingredients do not require a missing partner, and no particular conflict is identified. This does not imply an added benefit from combining them.
Partner coverage
No required ingredient partner is missing for the ingredients described here.
Conflicts
No particular ingredient conflict is identified.
Effective doses
The relevant ingredients have declared amounts; these amounts alone do not guarantee hair growth.
Study evidence
Iron Disputed 25 studies
Fitness
Impact
Moderate effect
A Ingredient FitF PathwaysD+ EvidenceA+ Formulation Logic

Iron at 18 mg supports nutritional needs relevant to oxygen transport and endurance. The exercise evidence is strongest when iron is insufficient, with no assumed additional performance benefit in iron-sufficient adults.

How this product is rated for Fitness

Ingredient fit94

The relevant ingredients give the formula a exerciseed connection to this goal. The amounts assessed meet the saved comparison levels.
Goal fit
The relevant ingredients give the formula a exerciseed connection to this goal.
Dose adequacy
The amounts assessed meet the saved comparison levels.

Pathways0

The saved findings identify nutritional support without meaningful coverage of a direct exercise mechanism. Coverage does not reach the saved threshold across direct exercise mechanisms.
Depth
The saved findings identify nutritional support without meaningful coverage of a direct exercise mechanism.
Breadth
Coverage does not reach the saved threshold across direct exercise mechanisms.

Evidence51

Iron provides the strongest evidence connection among ingredients counted at relevant amounts, with limited scope for everyday exercise benefits. The ingredients counted at relevant amounts match the preparations accepted in the saved findings.
Evidence strength
Iron provides the strongest evidence connection among ingredients counted at relevant amounts, with limited scope for everyday exercise benefits.
Studied preparation
The ingredients counted at relevant amounts match the preparations accepted in the saved findings.

Formulation logic100

The assessed ingredients can work alone or have their relevant partner present. No ingredient conflict was found in the supplied checks. All ingredients counted in this check meet its minimum amount threshold.
Partner coverage
The assessed ingredients can work alone or have their relevant partner present.
Conflicts
No ingredient conflict was found in the supplied checks.
Effective doses
All ingredients counted in this check meet its minimum amount threshold.
Study evidence
Iron Supportive 81 studies
Immunity
Impact
High effect
A Ingredient FitF PathwaysC+ EvidenceA+ Formulation Logic

Iron contributes to normal immune function when intake is low; deficiency can impair immune-cell function. The selected serving supplies 18 mg, reaching the saved nutritional reference. Its recognized contribution is limited to this conditional nutrient role, with no additional immune pathway represented in the saved findings. Iron supplementation does not establish infection prevention in adequately nourished adults.

How this product is rated for Immunity

Ingredient fit94

The recognized ingredients reach the comparison amounts; larger amounts do not establish greater immune benefit.
Goal fit
The recognized ingredient roles are concentrated in the immunity goal; links to other goals also affect the saved finding.
Dose adequacy
The recognized ingredients reach the comparison amounts; larger amounts do not establish greater immune benefit.

Pathways0

No additional immune pathway is represented, despite the conditional nutritional contribution from iron.
Depth
No additional immune pathway is represented, despite the conditional nutritional contribution from iron.
Breadth
No immune area reaches the substantial-coverage threshold in the saved findings.

Evidence68

Iron supplies the strongest recognized basis here; the supplied context limits which clinical immune benefits can be claimed.
Evidence strength
Iron supplies the strongest recognized basis here; the supplied context limits which clinical immune benefits can be claimed.
Studied preparation
The recognized preparations meet the saved check; this does not establish form superiority or automatic clinical benefit.

Formulation logic100

No defined ingredient-conflict condition was triggered by the supplied facts.
Partner coverage
The recognized ingredients can contribute independently or have required partners present; no additional combined benefit is established.
Conflicts
No defined ingredient-conflict condition was triggered by the supplied facts.
Effective doses
All recognized ingredients meet the minimum amount check; this is not a proven treatment threshold.
Study evidence
Iron Supportive 23 studies
Productivity Boost
Impact
Moderate effect
B- Ingredient FitF PathwaysC+ EvidenceA+ Formulation Logic
Iron · 18 mg

Iron at 18 mg supports oxygen transport and may help fatigue or poor concentration associated with low iron stores. The declared bisglycinate form does not by itself imply greater productivity, and benefit when iron status is adequate remains unproven.

How this product is rated for Productivity Boost

Ingredient fit74

Iron provide the main relevant contributions. The relevant amounts provide moderate support relative to the supplied comparison amounts.
Goal fit
Iron provide the main relevant contributions.
Dose adequacy
The relevant amounts provide moderate support relative to the supplied comparison amounts.

Pathways0

The saved findings identify nutritional support without direct coverage of the assessed productivity mechanisms.
Depth
The saved findings identify nutritional support without direct coverage of the assessed productivity mechanisms.
Breadth
No assessed route reaches the saved threshold for broad coverage.

Evidence69

Iron provides the strongest evidence finding among the relevant ingredients. Benefits for everyday work still depend on the setting and nutritional status. The saved findings accept the preparations of ingredients meeting its dose criterion.
Evidence strength
Iron provides the strongest evidence finding among the relevant ingredients. Benefits for everyday work still depend on the setting and nutritional status.
Studied preparation
The saved findings accept the preparations of ingredients meeting its dose criterion.

Formulation logic100

The relevant ingredients can contribute without a required additional partner. No conflicts were identified in the saved assessment.
Partner coverage
The relevant ingredients can contribute without a required additional partner.
Conflicts
No ingredient conflicts were identified in the saved assessment.
Effective doses
All ingredients included in the saved dose check meet its minimum contribution threshold.
Study evidence
Iron Supportive 69 studies

Ingredients

IngredientAmount per servingScore
Iron (Ferrochel Iron Bisglycinate)
18 mg 91
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
B Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
A serving provides 18 mg iron as iron bisglycinate. A whole-product serving costs about $0.04.
How this ingredient is rated

Active Ingredient Quality & Bioavailability78

The identified iron form is iron bisglycinate. The vitamin C amount is unavailable in the saved facts, so its contribution to iron absorption cannot be assessed.
Iron Chemical Form & Bioavailability
The identified iron form is iron bisglycinate.
Absorption Support & Blocker Avoidance
The vitamin C amount is unavailable in the saved facts, so its contribution to iron absorption cannot be assessed.

Dose, Safety & Label Transparency100

The label lists 18 mg iron per serving, as iron bisglycinate.
Elemental Iron Label Clarity
The label lists 18 mg iron per serving, with iron bisglycinate identified as its form.
Dosage Effectiveness & Safety Range
A serving provides 18 mg iron.

Value100

A whole-product serving costs about $0.04 and is labeled with 18 mg iron.
Price per Effective Serving
A whole-product serving costs about $0.04 and is labeled with 18 mg iron.
Report alternatives

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. Ferric carboxymaltose in patients with heart failure and iron deficiency.
    Anker SD; Comin Colet J; Filippatos G; Willenheimer R; Dickstein K; Drexler H; Lüscher TF; Bart B; Banasiak W; Niegowska J; Kirwan BA; Mori C; von Eisenhart Rothe B; Pocock SJ; Poole-Wilson PA; Ponikowski P; FAIR-HF Trial Investigators · The New England journal of medicine · 2010
    Randomized trial459 participantsFitness forIron
  7. Marginal iron deficiency without anemia impairs aerobic adaptation among previously untrained women.
    Brownlie T; Utermohlen V; Hinton PS; Giordano C; Haas JD · The American journal of clinical nutrition · 2002
    Randomized trial41 participantsFitness forIron
  8. Ferric Carboxymaltose Versus Ferrous Fumarate in Anemic Children with Inflammatory Bowel Disease: The POPEYE Randomized Controlled Clinical Trial.
    Bevers N; Van de Vijver E; Aliu A; Rezazadeh Ardabili A; Rosias P; Stapelbroek J; Bertrams Maartens IA; van de Feen C; Escher H; Oudshoorn A; Teklenburg S; Vande Velde S; Winkens B; Raijmakers M; Vreugdenhil A; Pierik MJ; van Rheenen PF · The Journal of pediatrics · 2023
    Randomized trial64 participantsFitness forIron
  9. 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 pooledFitness Productivity Boost forIron
  10. Altered metabolic response of iron-depleted nonanemic women during a 15-km time trial.
    Zhu YI; Haas JD · Journal of applied physiology (Bethesda, Md. : 1985) · 1998
    Randomized trial37 participantsFitness forIron
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. The immune response in iron-deficient children: Impaired cellular defense mechanisms with altered humoral components.
    Macdougall LG; Anderson R; McNab GM; Katz J · The Journal of pediatrics · 1975
    Single-arm trial27 participantsImmunity forIron
  17. The role of iron homeostasis in remodeling immune function and regulating inflammatory disease.
    Mu Q; Chen L; Gao X; Shen S; Sheng W; Min J; Wang F · Science bulletin · 2023
    Narrative reviewImmunity forIron
  18. Hepcidin--a peptide hormone at the interface of innate immunity and iron metabolism.
    Ganz T · Current topics in microbiology and immunology · 2006
    Narrative reviewImmunity forIron
  19. Adaptive immunity and vaccination - iron in the spotlight.
    Preston AE; Drakesmith H; Frost JN · Immunotherapy advances · 2025
    Narrative reviewImmunity forIron
  20. Buried Treasure: Evolutionary Perspectives on Microbial Iron Piracy.
    Barber MF; Elde NC · Trends in genetics : TIG · 2016
    Narrative reviewImmunity forIron