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Triple Magnesium Complex 400 mg

4.8
★ ★ ★ ★ ★
(41697 ratings)
Magnesium 400 mg
Product Image
Score78
High potency and very strong value stand out, but unclear form proportions and oxide-related tolerance are meaningful trade-offs.
How scoring works
Capsule
Quantity:300 Capsule(s) • (300 servings)
Goals:
General Health
Heart Health
Cardiovascular Support
Stress Relief
Bone Health
Testosterone Support
Energy
Sleep Support
Digestive Health

Score 78

High potency and very strong value stand out, but unclear form proportions and oxide-related tolerance are meaningful trade-offs.
How scoring works
$20.89($0.06 per serving)
iHerb
$ 23.19
Walmart
$ 23.19
iHerb
$ 20.89
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Analysis

Aspartate, citrate, and oxide provide a high-potency blend for general, heart, stress, and bone support. Citrate and aspartate are more useful for systemic intake than oxide.

The label shows the same full amount alongside each form rather than a clear split. That ambiguity prevents users from knowing how much of the serving comes from oxide.

One capsule and a very large supply create excellent practical value. The high label amount may still cause digestive effects and is not ideal for users who want precise form dosing.

Who is it for
  • Value-focused adults seeking high-potency magnesium
  • People comfortable with mixed forms
Best for
  • Broad magnesium support
  • Long-term economical supplementation

Pros

  • Substantial labeled amount
  • Includes citrate and aspartate
  • One-capsule serving
  • Excellent serving value

Cons

  • Contains magnesium oxide
  • Form proportions are not disclosed
  • Actual elemental presentation is unclear

Warnings

  • The 400 mg serving may cause diarrhea or abdominal cramping in sensitive users

Nutrient quality

76 High impact

The substantial amount gives the formula strong magnesium depth at low cost. Mixed forms and digestive risk at the full serving reduce quality.

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Ingredient transparency

73 High impact

The total elemental amount and three forms are named, but their proportions are not shown. No hidden blend is present, while directions and non-active ingredients are absent.

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Customer satisfaction

73 High impact

The available satisfaction metric and sample size provide the clearest evidence for general acceptance. Specific experience details are absent, so repeated complaints and purpose fit remain uncertain.

.

Value for money

94 Highest impact

An exceptionally low serving cost supports strong nominal value. Mixed form quality lowers effective value compared with cleaner chelates.

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Report analysis

Goals

General Health
Impact
Highest effect
A+ Goal FitB+ Strength of SupportB- CoverageB+ Formula Quality
Magnesium · 400 mg

A clearly disclosed 400 mg magnesium serving offers meaningful support for muscle, nerve, and energy-related functions. Citrate and aspartate add useful absorption potential to the blend.

Magnesium oxide lowers form quality, and the share supplied by each source is not stated. The substantial supplemental amount may also loosen stools, particularly because oxide can have a laxative effect.

Study evidence
Magnesium Supportive 114 studies
Heart Health
Impact
High effect
A- Goal FitA- Strength of SupportC CoverageB Formula Quality
Magnesium · 400 mg

A fully disclosed 400 mg magnesium amount supports vascular tone and normal cardiac rhythm. Citrate and aspartate improve the blend, while oxide lowers overall absorption quality.

The product offers strong mineral depth but does not cover lipid, homocysteine, or cardiac-energy pathways. Magnesium can cause loose stools, with the oxide and citrate forms making digestive effects more likely in sensitive users.

Study evidence
Magnesium Supportive 158 studies
Cardiovascular Support
Impact
High effect
A- Goal FitB+ Strength of SupportC- CoverageB Formula Quality
Magnesium · 400 mg

Magnesium directly supports vascular relaxation, blood-pressure regulation, and electrical stability of the heart. The 400 mg elemental amount is substantial, but the blend combines moderately absorbed citrate and aspartate with poorly absorbed oxide.

Three magnesium sources create mixed rather than clearly improved delivery, and no supportive cardiovascular cofactor is included. The high supplemental amount may cause diarrhea, while impaired kidney function can raise the risk of magnesium accumulation.

Study evidence
Magnesium Supportive 123 studies
Stress Relief
Impact
High effect
B+ Goal FitB Strength of SupportC CoverageB+ Formula Quality
Magnesium · 400 mg

A substantial magnesium amount gives the formula clear relevance to nervous-system regulation and stress resilience. Citrate and aspartate improve the blend, while oxide lowers its average absorption quality.

The amount is fully disclosed and provides useful depth in a single foundational pathway. No cofactor, adaptogen, or direct calming amino acid expands the formula beyond magnesium.

Study evidence
Magnesium Supportive 13 studies
Bone Health
Impact
High effect
B Goal FitB Strength of SupportD+ CoverageB Formula Quality
Magnesium · 400 mg

Magnesium supplies a relevant structural mineral and supports vitamin D activation and bone-cell function. Human evidence connects adequate magnesium status with skeletal health, though supplementation alone is less comprehensive than a full bone formula.

The 400 mg elemental amount is clearly disclosed and reaches a useful daily range. Citrate and aspartate offer moderate absorption, while oxide lowers the blend quality and no cofactor is included.

Study evidence
Magnesium Supportive 48 studies
Testosterone Support
Impact
High effect
B+ Goal FitC+ Strength of SupportD+ CoverageA- Formula Quality
Magnesium · 400 mg

Magnesium provides a relevant route to testosterone support. The disclosed amount appears meaningful for that focused role.

The formula remains narrow rather than comprehensive. Triple Magnesium Complex 400 mg is best viewed as targeted support rather than proof of a clinical benefit.

Study evidence
Magnesium Disputed 5 studies

Ingredients

IngredientAmount per serving
Magnesium (Magnesium Aspartate, Magnesium Citrate, Magnesium Oxide)
400 mg
Adults 18–50
Report overview
F Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyB- Value
+1

The blend combines moderately absorbed citrate and aspartate with lower-absorption oxide, so form quality is mixed. The elemental amount is clearly disclosed and falls within the target daily range. Serving cost is exceptionally low, although no premium chelate or supportive cofactor is included.

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Sources

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

  1. 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
  2. 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
  3. Diagnosis of magnesium-induced diarrhea.
    Fine KD; Santa Ana CA; Fordtran JS · The New England journal of medicine · 1991
    Clinical trial19 participantsDigestive Health forMagnesium
  4. Lactobacillus casei rhamnosus Lcr35 in children with chronic constipation.
    Bu LN; Chang MH; Ni YH; Chen HL; Cheng CC · Pediatrics international : official journal of the Japan Pediatric Society · 2007
    Randomized trial45 participantsDigestive Health forMagnesium
  5. Lactobacillus reuteri DSM 17938 and Magnesium Oxide in Children with Functional Chronic Constipation: A Double-Blind and Randomized Clinical Trial.
    Kubota M; Ito K; Tomimoto K; Kanazaki M; Tsukiyama K; Kubota A; Kuroki H; Fujita M; Vandenplas Y · Nutrients · 2020
    Randomized trial60 participantsDigestive Health forMagnesium
  6. 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
  7. Magnesium-Rich Mineral Water Improves Stool Consistency and Bowel Habits in Healthy Subjects: A Randomized Controlled Trial.
    Yoneda H; Tomita T; Kitano T; Morishita D; Kodani M; Nishii N; Sei H; Eda H; Sato T; Kawai M; Yokoyama Y; Igeta M; Okugawa T; Fukui H; Shinzaki S · Neurogastroenterology and motility · 2026
    Randomized trial40 participantsDigestive Health forMagnesium
  8. 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
  9. 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
  10. Effect of the laxative magnesium oxide on gastrointestinal functional recovery in fast-track colonic resection: a double-blind, placebo-controlled randomized study.
    Andersen J; Christensen H; Pachler JH; Hallin M; Thaysen HV; Kehlet H · Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2012
    Randomized trial49 participantsDigestive Health forMagnesium
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  25. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium
  26. 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
  27. 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
  28. 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
  29. 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
  30. 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
  31. 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
  32. 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
  33. 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
  34. Effects of magnesium and potassium supplementation on insomnia and sleep hormones in patients with diabetes mellitus.
    Khalid S; Bashir S; Mehboob R; Anwar T; Ali M; Hashim M; Waseem H; Basharat S · Frontiers in endocrinology · 2024
    Randomized trial320 participantsSleep Support forMagnesium
  35. Association of magnesium intake with sleep duration and sleep quality: findings from the CARDIA study.
    Zhang Y; Chen C; Lu L; Knutson KL; Carnethon MR; Fly AD; Luo J; Haas DM; Shikany JM; Kahe K · Sleep · 2022
    Cohort study3,964 participantsSleep Support forMagnesium
  36. Lidocaine vs. magnesium: effect on analgesia after a laparoscopic cholecystectomy.
    Saadawy IM; Kaki AM; Abd El Latif AA; Abd-Elmaksoud AM; Tolba OM · Acta anaesthesiologica Scandinavica · 2010
    Randomized trial120 participantsSleep Support forMagnesium
  37. The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial.
    Abbasi B; Kimiagar M; Sadeghniiat K; Shirazi MM; Hedayati M; Rashidkhani B · Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2013
    Randomized trial46 participantsSleep Support forMagnesium
  38. A randomized, double-blind, placebo-controlled, multicenter study assessing the efficacy of magnesium oxide monohydrate in the treatment of nocturnal leg cramps.
    Barna O; Lohoida P; Holovchenko Y; Bazylevych A; Velychko V; Hovbakh I; Bula L; Shechter M · Nutrition journal · 2021
    Randomized trial175 participantsSleep Support forMagnesium
  39. 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
  40. 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
  41. 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
  42. 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
  43. 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
  44. Magnesium and anabolic hormones in older men.
    Maggio M; Ceda GP; Lauretani F; Cattabiani C; Avantaggiato E; Morganti S; Ablondi F; Bandinelli S; Dominguez LJ; Barbagallo M; Paolisso G; Semba RD; Ferrucci L · International journal of andrology · 2012
    Cohort study399 participantsTestosterone Support forMagnesium
  45. Analysis of the relationship between the blood concentration of several metals, macro- and micronutrients and endocrine disorders associated with male aging.
    Rotter I; Kosik-Bogacka DI; Dołęgowska B; Safranow K; Kuczyńska M; Laszczyńska M · Environmental geochemistry and health · 2017
    Cross-sectional study313 participantsTestosterone Support forMagnesium
  46. Effect of magnesium supplementation in improving hyperandrogenism, hirsutism, and sleep quality in women with polycystic ovary syndrome: A randomized, placebo-controlled clinical trial.
    Gholizadeh-Moghaddam M; Ghasemi-Tehrani H; Askari G; Jaripur M; Clark CCT; Rouhani MH · Health science reports · 2024
    Randomized trial64 participantsTestosterone Support forMagnesium
  47. The effects of trace element supplementation on glycolipid metabolism in PCOS: a systematic review and meta-analysis.
    Yang L; Gao Y; Zhao W; Qi Y; Duo X; Wang H · Frontiers in nutrition · 2025
    Meta-analysis1,600 participants25 studies pooledTestosterone Support forMagnesium
  48. Effects of magnesium supplementation on testosterone levels of athletes and sedentary subjects at rest and after exhaustion.
    Cinar V; Polat Y; Baltaci AK; Mogulkoc R · Biological trace element research · 2011
    Non-randomized trial20 participantsTestosterone Support forMagnesium