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Magnesium 200 mg

4.7
★ ★ ★ ★ ★
(832 ratings)
Magnesium 200 mg
Product Image
Score73
A useful elemental amount is undermined by missing form disclosure. The formula is simple, but its likely absorption and tolerance cannot be judged.
How scoring works
Capsule
Quantity:120 Capsule(s) • (60 servings)
Goals:
Energy
General Health
Cardiovascular Support
Stress Relief
Heart Health

Score 73

A useful elemental amount is undermined by missing form disclosure. The formula is simple, but its likely absorption and tolerance cannot be judged.
How scoring works
$16.99($0.28 per serving)
Nutrition Faktory
$ 16.99
Vitacost
$ 21.99
iHerb
$ 21.99
iHerb
$ 21.99
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Analysis

The serving supplies 200 mg of magnesium in a straightforward capsule formula. That amount can contribute to normal energy metabolism, muscle function, and nervous-system signaling when dietary intake is inadequate.

No source compound or chelation information is provided. As a result, the label cannot show whether the mineral is designed for systemic absorption, gentle use, or a stronger bowel effect.

The focused design is easier to understand than a crowded blend. A similarly dosed product that clearly identifies glycinate, citrate, malate, or another form would provide more dependable value.

Who is it for
  • Adults wanting a moderate magnesium serving
  • People who favor a minimal capsule formula
Best for
  • Basic magnesium supplementation
  • Supporting intake when form preference is not important

Pros

  • Useful 200 mg amount
  • Simple single-mineral formula
  • Clear elemental quantity

Cons

  • Source form is omitted
  • Bioavailability cannot be estimated
  • Likely bowel effects are unclear

Warnings

  • The unidentified magnesium compound may cause loose stools or cramping in sensitive users.
  • Magnesium can bind tetracycline or quinolone antibiotics and oral bisphosphonates, so these medicines should be taken several hours apart.
  • Impaired kidney function can reduce magnesium clearance, making a large supplemental amount less appropriate without clinical guidance.

Nutrient quality

75 High impact

The magnesium source is not disclosed, so bioavailability cannot be judged. The magnesium amount reaches the lower end of a useful supplemental range.

Ingredient transparency

73 High impact

The elemental magnesium amount is stated clearly. Generic magnesium naming omits the chemical form needed for quality assessment.

Customer satisfaction

69 High impact

The aggregate rating is strong and the available feedback volume gives it useful support. No specific review comments are supplied to assess recurring benefits or complaints.

Value for money

74 High impact

The useful dose and low routine cost are tempered by missing form information. No unnecessary actives dilute the formula.

Report analysis

Goals

Energy
Energy
Impact
Highest effect
A- Goal FitB Strength of SupportC CoverageA+ Formula Quality
Magnesium · 200 mg

A clearly stated target-level magnesium serving supports ATP-dependent enzymes, muscle function, and normal nerve activity. The amount reaches the useful range for correcting a dietary gap.

The chemical source is not disclosed, so absorption quality and chelation cannot be verified. Its focused design provides depth for one metabolic pathway rather than broad or immediate energy support.

Study evidence
Magnesium Supportive 4 studies
General Health
Stress Resilience
General Health
Impact
High effect
A Goal FitC+ Strength of SupportC- CoverageA Formula Quality
Magnesium · 200 mg

A practical magnesium amount supports energy metabolism, muscle function, and nervous-system regulation. The single-mineral approach has useful depth but does not address other common nutrient gaps.

The elemental amount is clearly stated at the lower edge of a useful daily range. The source form is omitted, so absorption, chelation quality, and likely tolerance cannot be verified.

Study evidence
Magnesium Supportive 114 studies
Cardiovascular Support
Cardiovascular Support
Impact
High effect
A- Goal FitC Strength of SupportD+ CoverageA Formula Quality
Magnesium · 200 mg

Magnesium provides focused support for vascular relaxation and normal heart rhythm. The stated amount reaches a useful supplemental range.

The label does not identify the magnesium source, which prevents a reliable absorption assessment. A simple single-mineral design keeps the intended contribution clear despite that disclosure gap.

Study evidence
Magnesium Supportive 123 studies
Stress Relief
Stress Relief
Impact
High effect
B Goal FitC Strength of SupportD CoverageA+ Formula Quality
Magnesium · 200 mg

Magnesium supports nervous-system regulation and muscle relaxation, and the 200 mg amount is meaningful. Its stress-relief benefit is most likely when dietary intake or magnesium status is low.

The magnesium source form is not disclosed, so absorption and chelation quality cannot be verified. The focused single-mineral formula does not cover adaptogen or neurotransmitter pathways.

Study evidence
Magnesium Supportive 13 studies
Heart Health
Healthy Blood Pressure
Heart Health
Impact
High effect
B Goal FitC- Strength of SupportD CoverageB+ Formula Quality
Magnesium · 200 mg

A 200 mg magnesium serving provides focused support for normal cardiac electrical activity and vascular tone. The missing source form prevents judging absorption or chelation quality.

The single-mineral design is lean and provides a practical daily amount. Form uncertainty is the main reason it cannot be considered a high-confidence magnesium option.

Study evidence
Magnesium Supportive 158 studies
Digestive Health
Digestive Health
Impact
Moderate effect
C Goal FitC Strength of SupportF CoverageA- Formula Quality
Magnesium · 200 mg

The serving provides a meaningful amount of magnesium that may support intestinal muscle function and motility. The source form is missing, so absorption, tolerance, and stool-softening potential cannot be judged well.

A focused capsule formula avoids unrelated actives and clearly states the elemental amount. The disclosure gap keeps it from standing out for targeted digestive use, especially when citrate would offer a clearer motility rationale.

Study evidence
Magnesium Supportive 50 studies
Bone Health
Bone Health
Impact
Moderate effect
C- Goal FitD+ Strength of SupportF CoverageC+ Formula Quality
Magnesium · 200 mg

A moderate magnesium amount contributes to bone mineral structure and remodeling. The unspecified magnesium form prevents a confident assessment of absorption.

No calcium, vitamin D, vitamin K, or matrix-supporting protein is included. The focused formula may help magnesium intake but offers narrow skeletal coverage.

Study evidence
Magnesium Supportive 48 studies

Ingredients

IngredientAmount per serving
Magnesium
200 mg
Gluten Free Adults 18–50 Kosher Dairy Free Sugar Free Vegetarian
Report overview
Magnesium · 200 mg OverallScore46
F Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyD+ Value

The serving provides a clearly stated amount at the lower edge of the preferred range. The source form is not provided, so absorption and chelation quality cannot be verified. A low serving cost helps, but the disclosure gap weakens the quality case.

View ingredientView products
Loading alternative details
91 Performance

Krebs Magnesium Potassium Complex

Nature's Way
Magnesium lysinate and malate provide favorable forms at a useful amount, with a modest potassium contribution. The clearly identified form provides a more predictable magnesium option than the original’s mixed or less fully described formulation. The formula remains focused rather than comprehensive.
88 Performance

Magnesium Bisglycinate Powder

NOW
Magnesium bisglycinate supplies a well-absorbed form at a practical amount in an adjustable powder. The clearly identified form provides a more predictable magnesium option than the original’s mixed or less fully described formulation. The single-mineral design does not address needs beyond magnesium.
85 Performance

Magnesium Bisglycinate 200 mg

Natural Factors
Magnesium bisglycinate provides a highly absorbable form at a moderate amount suited to routine use. The clearly identified form provides a more predictable magnesium option than the original’s mixed or less fully described formulation. The focused formula offers no additional electrolyte or relaxation ingredients.
83 Budget

Magnesium Citrate Pure Powder

Best Naturals
Magnesium citrate in an adjustable powder provides useful absorption with a clearly stated amount. Its lower serving cost improves affordability, while citrate may loosen stools in sensitive users.
80 Budget

Magnesium Caps 500 mg

Life Extension
Citrate, succinate, and named glycinate broaden the magnesium forms in a very economical capsule. Its lower serving cost improves affordability, while the oxide portion lowers average absorption, and the large amount may cause diarrhea or cramping.
84 Budget

Potassium + Magnesium

Nutricost
Magnesium citrate with a modest potassium addition creates a simple two-mineral electrolyte formula. Its lower serving cost improves affordability, while potassium is only a supporting amount, and citrate may loosen stools in sensitive users.
85 Value

Magnesium Bisglycinate Chelate

Healthy Origins
TRAACS magnesium bisglycinate combines premium form quality, a useful elemental amount, and a clean powder format. The lower serving cost strengthens quality-adjusted value. The formula is narrow, and supplied customer satisfaction is less convincing than its ingredient quality.
83 Value

Magnesium Citrate 420 mg

Nutricost
A substantial magnesium citrate amount offers useful absorption in a focused, economical formula. The lower serving cost strengthens quality-adjusted value. The higher amount may loosen stools or cause abdominal discomfort in sensitive users.
82 Value

Magnesium Citrate 200 mg

The Vitamin Shoppe
A moderate magnesium citrate amount provides practical daily supplementation in a simple tablet. The lower serving cost strengthens quality-adjusted value. Tablet excipients and complete directions are not supplied, and citrate may affect digestive tolerance.
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Sources

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

  1. Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial.
    Hausenblas HA; Lynch T; Hooper S; Shrestha A; Rosendale D; Gu J · Sleep medicine: X · 2025
    Randomized trial80 participantsEnergy forMagnesium
  2. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  3. The effect of food, vitamin, or mineral supplements on chronic constipation in adults: A systematic review and meta-analysis of randomized controlled trials.
    van der Schoot A; Creedon A; Whelan K; Dimidi E · Neurogastroenterology and motility · 2023
    Meta-analysis787 participants8 studies pooledDigestive Health forMagnesium
  4. Diagnosis of magnesium-induced diarrhea.
    Fine KD; Santa Ana CA; Fordtran JS · The New England journal of medicine · 1991
    Clinical trial19 participantsDigestive Health forMagnesium
  5. Association between Serum Magnesium and Fractures: A Systematic Review and Meta-Analysis of Observational Studies.
    Dominguez LJ; Veronese N; Ciriminna S; Pérez-Albela JL; Vásquez-López VF; Rodas-Regalado S; Di Bella G; Parisi A; Tagliaferri F; Barbagallo M · Nutrients · 2023
    Meta-analysis119,755 participants4 studies pooledBone Health forMagnesium
  6. Bioabsorbable Magnesium-Based Materials Potential and Safety in Bone Surgery: A Systematic Review.
    Hung CH; Kwok YC; Yip J; Wong HH; Leung YY · Craniomaxillofacial trauma & reconstruction · 2025
    Systematic review386 participants8 studies pooledBone Health forMagnesium
  7. Vascularized bone grafting fixed by biodegradable magnesium screw for treating osteonecrosis of the femoral head.
    Zhao D; Huang S; Lu F; Wang B; Yang L; Qin L; Yang K; Li Y; Li W; Wang W; Tian S; Zhang X; Gao W; Wang Z; Zhang Y; Xie X; Wang J; Li J · Biomaterials · 2016
    Randomized trial48 participantsBone Health forMagnesium
  8. An update on magnesium and bone health.
    Rondanelli M; Faliva MA; Tartara A; Gasparri C; Perna S; Infantino V; Riva A; Petrangolini G; Peroni G · Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2022
    Narrative reviewBone Health forMagnesium
  9. Sex-specific differences in the association of magnesium intake with femoral neck bone mineral density among older adults.
    Wang B; Tan X; Yao X; Zhu Z · Endocrine connections · 2025
    Cross-sectional study1,343 participantsBone Health forMagnesium
  10. Circulating and dietary magnesium and risk of cardiovascular disease: a systematic review and meta-analysis of prospective studies.
    Del Gobbo LC; Imamura F; Wu JH; de Oliveira Otto MC; Chiuve SE; Mozaffarian D · The American journal of clinical nutrition · 2013
    Meta-analysis313,041 participants16 studies pooledCardiovascular Support forMagnesium
  11. Magnesium and the risk of cardiovascular events: a meta-analysis of prospective cohort studies.
    Qu X; Jin F; Hao Y; Li H; Tang T; Wang H; Yan W; Dai K · PloS one · 2013
    Meta-analysis532,979 participants19 studies pooledCardiovascular Support forMagnesium
  12. Quantitative Association Between Serum/Dietary Magnesium and Cardiovascular Disease/Coronary Heart Disease Risk: A Dose-Response Meta-analysis of Prospective Cohort Studies.
    Zhao L; Hu M; Yang L; Xu H; Song W; Qian Y; Zhao M · Journal of cardiovascular pharmacology · 2020
    Meta-analysis544,581 participants18 studies pooledCardiovascular Support Heart Health forMagnesium
  13. Comparative Efficacy of Nutraceuticals on Endothelial Function: A Systematic Review and Network Meta-Analysis.
    Norouzzadeh M; Rashedi MH; Mahdavi-Mazdeh G; Kosari A; Shahinfar H · Current atherosclerosis reports · 2026
    Meta-analysisCardiovascular Support Heart Health forMagnesium
  14. Serum magnesium, mortality, and cardiovascular disease in chronic kidney disease and end-stage renal disease patients: a systematic review and meta-analysis.
    Xiong J; He T; Wang M; Nie L; Zhang Y; Wang Y; Huang Y; Feng B; Zhang J; Zhao J · Journal of nephrology · 2020
    Meta-analysis200,934 participants20 studies pooledCardiovascular Support forMagnesium
  15. Efficacy of oral magnesium therapy in the treatment of chronic constipation in spastic cerebral palsy children: a randomized controlled trial.
    Hassanein SMA; Deifallah SM; Bastawy HA · World journal of pediatrics : WJP · 2021
    Randomized trial100 participantsDigestive Health forMagnesium
  16. Ca:Mg ratio, medium-chain fatty acids, and the gut microbiome.
    Fan L; Zhu X; Sun S; Yu C; Huang X; Ness R; Dugan LL; Shu L; Seidner DL; Murff HJ; Fodor AA; Azcarate-Peril MA; Shrubsole MJ; Dai Q · Clinical nutrition (Edinburgh, Scotland) · 2022
    Randomized trial240 participantsDigestive Health forMagnesium
  17. The Magnesium-Rich Formula for Functional Constipation in Infants: a Randomized Comparator-Controlled Study.
    Benninga MA; MENA Infant Constipation Study Group; Vandenplas Y · Pediatric gastroenterology, hepatology & nutrition · 2022
    Randomized trial286 participantsDigestive Health forMagnesium
  18. A Randomized Double-blind Placebo-controlled Trial on the Effect of Magnesium Oxide in Patients With Chronic Constipation.
    Mori S; Tomita T; Fujimura K; Asano H; Ogawa T; Yamasaki T; Kondo T; Kono T; Tozawa K; Oshima T; Fukui H; Kimura T; Watari J; Miwa H · Journal of neurogastroenterology and motility · 2022
    Randomized trial34 participantsDigestive Health forMagnesium
  19. Magnesium treatment increases gut microbiome synthesizing vitamin D and inhibiting colorectal cancer: results from a double-blind precision-based randomized placebo-controlled trial.
    Sun E; Zhu X; Ness RM; Murff HJ; Sun S; Yu C; Fan L; Azcarate-Peril MA; Shrubsole MJ; Dai Q · The American journal of clinical nutrition · 2025
    Randomized trial240 participantsDigestive Health forMagnesium
  20. Total magnesium intake and risk of frailty in older women.
    Struijk EA; Fung TT; Bischoff-Ferrari HA; Willett WC; Lopez-Garcia E · Journal of cachexia, sarcopenia and muscle · 2024
    Cohort study81,524 participantsEnergy forMagnesium
  21. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium
  22. Perioperative systemic magnesium to minimize postoperative pain: a meta-analysis of randomized controlled trials.
    De Oliveira GS; Castro-Alves LJ; Khan JH; McCarthy RJ · Anesthesiology · 2013
    Meta-analysis1,257 participants20 studies pooledGeneral Health forMagnesium
  23. Long-term outcome after intravenous magnesium sulphate in suspected acute myocardial infarction: the second Leicester Intravenous Magnesium Intervention Trial (LIMIT-2).
    Woods KL; Fletcher S · Lancet (London, England) · 1994
    Randomized trial2,316 participantsGeneral Health forMagnesium
  24. Association of magnesium sulfate use with mortality in critically ill patients with sepsis: a retrospective propensity score-matched cohort study.
    Gu WJ; Duan XJ; Liu XZ; Cen Y; Tao LY; Lyu J; Yin HY · British journal of anaesthesia · 2023
    Cohort study10,999 participantsGeneral Health forMagnesium
  25. Hypomagnesemia and Mortality in Incident Hemodialysis Patients.
    Li L; Streja E; Rhee CM; Mehrotra R; Soohoo M; Brunelli SM; Kovesdy CP; Kalantar-Zadeh K · American journal of kidney diseases : the official journal of the National Kidney Foundation · 2016
    Cohort study9,359 participantsGeneral Health forMagnesium
  26. The effects of magnesium supplementation on abnormal uterine bleeding, alopecia, quality of life, and acne in women with polycystic ovary syndrome: a randomized clinical trial.
    Jaripur M; Ghasemi-Tehrani H; Askari G; Gholizadeh-Moghaddam M; Clark CCT; Rouhani MH · Reproductive biology and endocrinology : RB&E · 2022
    Randomized trial64 participantsGeneral Health forMagnesium
  27. Effects of magnesium supplementation on improving hyperglycemia, hypercholesterolemia, and hypertension in type 2 diabetes: A pooled analysis of 24 randomized controlled trials.
    Xu L; Li X; Wang X; Xu M · Frontiers in nutrition · 2023
    Meta-analysis1,325 participants24 studies pooledHeart Health forMagnesium
  28. The effect of lowering blood pressure by magnesium supplementation in diabetic hypertensive adults with low serum magnesium levels: a randomized, double-blind, placebo-controlled clinical trial.
    Guerrero-Romero F; Rodríguez-Morán M · Journal of human hypertension · 2009
    Randomized trial82 participantsHeart Health forMagnesium
  29. Positive effects of magnesium supplementation in metabolic syndrome.
    Kisters S; Kisters K; Werner T; Vormann J; Tokmak F; Westhoff T; Gröber U; Predel HG; Reuter H · International journal of clinical pharmacology and therapeutics · 2024
    Randomized trial54 participantsHeart Health forMagnesium
  30. Role of magnesium supplementation in the treatment of depression: A randomized clinical trial.
    Tarleton EK; Littenberg B; MacLean CD; Kennedy AG; Daley C · PloS one · 2017
    Randomized trial126 participantsStress Relief forMagnesium
  31. Effects of Intravenous Esketamine or Magnesium Sulfate on Early Postoperative Negative Emotions and Pain in Patients Undergoing Endoscopic Sinus Surgery: A Randomized Controlled Trial.
    Wang L; Zhou J; Liu Q; Qian K; Wang L; Xie C · Therapeutics and clinical risk management · 2026
    Randomized trial137 participantsStress Relief forMagnesium
  32. Effect of short-term magnesium supplementation on anxiety, depression and sleep quality in patients after open-heart surgery.
    Saba S; Faizi F; Sepandi M; Nehrir B · Magnesium research · 2022
    Non-randomized trial60 participantsStress Relief forMagnesium
  33. Effects of dry needling compared to magnesium infiltration in trigger points for patients with myofascial pain syndrome: a randomized controlled study in Tunisia.
    Dhouibi J; Moncer R; Kalbousi N; Gaddour M; Laayouni S; Ouanes W; Kacem B; Jemni S · Korean journal of family medicine · 2026
    Randomized trial45 participantsStress Relief forMagnesium
  34. Effect of magnesium and vitamin B6 supplementation on mental health and quality of life in stressed healthy adults: Post-hoc analysis of a randomised controlled trial.
    Noah L; Dye L; Bois De Fer B; Mazur A; Pickering G; Pouteau E · Stress and health : journal of the International Society for the Investigation of Stress · 2021
    Randomized trialStress Relief forMagnesium