Magnesium & Potassium Aspartate

Magnesium & Potassium Aspartate

NOW4.8 (13,058 ratings)
Format:Capsule Quantity: 120 Capsule(s) · 60 servings
Goals

Product analysis

67 out of 100

Magnesium & Potassium Aspartate offers magnesium to help fill dietary gaps, with benefits for tiredness most relevant when intake is low.

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

Nutrient Quality49

The magnesium and potassium sources are named, with reasonable absorption potential for the magnesium. The taurine preparation and the quality of the potassium remain less certain.

Ingredient Transparency88

Amounts are stated for all three ingredients. The magnesium and potassium forms are identified, while the taurine preparation is unspecified.

Value For Money58

The serving cost appears reasonable for magnesium aspartate. There is not enough information to judge value separately for potassium or taurine.

Customer Satisfaction92

Customer ratings are favorable, with a useful number of buyers contributing. They describe satisfaction rather than proving effectiveness or safety.

Product Focus60

The clearest role is magnesium supplementation when dietary intake is low. The small potassium and taurine amounts do not establish the blood-pressure benefits described for larger amounts.

Format
Capsule
Container
120 Capsule(s)
Per serving
$0.21
Customer rating
4.8 · 13,058 ratings
Report analysis

Goals

Impact
High effect
B+ Ingredient FitD+ PathwaysA- EvidenceA+ Formulation Logic
Magnesium · 250 mgTaurine · 100 mg
Study evidence
Magnesium Supportive 114 studies
Taurine No effect 3 studies
Stress Relief
Impact
Moderate effect
C Ingredient FitF PathwaysB EvidenceA+ Formulation Logic
Magnesium · 250 mg
Study evidence
Magnesium Supportive 13 studies
Taurine Supportive 5 studies
Impact
High effect
B Ingredient FitF PathwaysA- EvidenceA+ Formulation Logic
Magnesium · 250 mgPotassium · 99 mg
Study evidence
Magnesium Supportive 4 studies
Potassium Supportive 2 studies
Impact
High effect
B Ingredient FitD PathwaysA- EvidenceA+ Formulation Logic
Magnesium · 250 mgTaurine · 100 mg
Study evidence
Magnesium Supportive 158 studies
Potassium Supportive 182 studies
Taurine Supportive 25 studies
Cardiovascular Support
Impact
High effect
B Ingredient FitD+ PathwaysA- EvidenceA+ Formulation Logic
Potassium · 99 mgMagnesium · 250 mgTaurine · 100 mg
Study evidence
Magnesium Supportive 123 studies
Potassium Supportive 117 studies
Taurine Supportive 24 studies
Bone Health
Impact
High effect
C+ Ingredient FitD- PathwaysA- EvidenceA+ Formulation Logic
Magnesium · 250 mg
Study evidence
Magnesium Supportive 48 studies
Potassium Supportive 39 studies

Ingredients

IngredientAmount per servingScore
Magnesium (Magnesium Aspartate)
250 mg 72
Potassium (Potassium Aspartate)
99 mg
Taurine
100 mg 52
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
D Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyB+ Value
Each serving supplies 250 mg of magnesium, a substantial amount. The serving cost is low for the magnesium source. It uses Magnesium Aspartate.
How this ingredient is rated

Active Ingredient Quality & Bioavailability49

It uses Magnesium Aspartate. No named chelation standard or fully reacted claim is specified.
Magnesium Form & Absorption Potential
It uses Magnesium Aspartate.
Patented Materials & Chelation Quality
No named chelation standard or fully reacted claim is specified.

Dose, Safety & Label Transparency90

The label states the elemental magnesium amount. No positive amount of vitamin B6, vitamin D or boron is indicated.
Elemental Yield Transparency
The elemental magnesium amount per serving is stated.
Therapeutic Dosage Alignment
Each serving provides 250 mg of magnesium, a substantial amount.
Synergistic Formulation Logic
No positive amount of vitamin B6, vitamin D or boron is indicated.

Value80

The serving cost is low for the magnesium source.
Price Per Elemental Quality
The serving cost is low for the magnesium source.
Taurine · 100 mg OverallScore52
C+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value
A serving provides 100 mg of taurine, with a high product cost relative to that amount. The source and manufacturing origin are unspecified. Testing or GMP manufacturing is claimed; a specific certification seal is not indicated.
How this ingredient is rated

Active Ingredient Quality & Bioavailability66

The taurine is described as L-taurine or free-form; a purity grade is not specified. The taurine source and manufacturing origin are not specified. Standard excipients are indicated, though they are not named here.
Chemical Form and Purity
The taurine is described as L-taurine or free-form; a purity grade is not specified.
Sourcing and Branded Ingredients
The taurine source and manufacturing origin are not specified.
Formulation Cleanliness
Standard excipients are indicated, though they are not named here.

Dose, Safety & Label Transparency54

The serving provides a small 100 mg amount of taurine. Testing or GMP manufacturing is claimed; a specific certification seal is not indicated.
Taurine Dosage Potency
The serving provides a small 100 mg amount of taurine.
Dose Disclosure
The taurine amount per serving is stated as 100 mg.
Quality Assurance and Testing
Testing or GMP manufacturing is claimed; a specific certification seal is not indicated.

Value20

The product cost is high relative to the taurine amount.
Price per Gram of Taurine
The product cost is high relative to the taurine amount.
Report alternatives

Sources

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

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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
  6. Effect of potassium citrate on bone density, microarchitecture, and fracture risk in healthy older adults without osteoporosis: a randomized controlled trial.
    Jehle S; Hulter HN; Krapf R · The Journal of clinical endocrinology and metabolism · 2013
    Randomized trial201 participantsBone Health forPotassium
  7. Long-term persistence of the urine calcium-lowering effect of potassium bicarbonate in postmenopausal women.
    Frassetto L; Morris RC; Sebastian A · The Journal of clinical endocrinology and metabolism · 2005
    Randomized trial170 participantsBone Health forPotassium
  8. Partial neutralization of the acidogenic Western diet with potassium citrate increases bone mass in postmenopausal women with osteopenia.
    Jehle S; Zanetti A; Muser J; Hulter HN; Krapf R · Journal of the American Society of Nephrology : JASN · 2007
    Randomized trial161 participantsBone Health forPotassium
  9. Potassium citrate supplementation results in sustained improvement in calcium balance in older men and women.
    Moseley KF; Weaver CM; Appel L; Sebastian A; Sellmeyer DE · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2013
    Randomized trial52 participantsBone Health forPotassium
  10. Effects of potassium chloride and potassium bicarbonate on endothelial function, cardiovascular risk factors, and bone turnover in mild hypertensives.
    He FJ; Marciniak M; Carney C; Markandu ND; Anand V; Fraser WD; Dalton RN; Kaski JC; MacGregor GA · Hypertension (Dallas, Tex. : 1979) · 2010
    Randomized trial42 participantsBone Health forPotassium
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. Sex-specific associations between sodium and potassium intake and overall and cause-specific mortality: a large prospective U.S. cohort study, systematic review, and updated meta-analysis of cohort studies.
    Gan L; Zhao B; Inoue-Choi M; Liao LM; Graubard BI; Weinstein SJ; Albanes D; Huang J · BMC medicine · 2024
    Meta-analysis416,104 participantsCardiovascular Support forPotassium
  17. Potassium intake, stroke, and cardiovascular disease a meta-analysis of prospective studies.
    D'Elia L; Barba G; Cappuccio FP; Strazzullo P · Journal of the American College of Cardiology · 2011
    Meta-analysis247,510 participants11 studies pooledCardiovascular Support Heart Health forPotassium
  18. Blood pressure response to changes in sodium and potassium intake: a metaregression analysis of randomised trials.
    Geleijnse JM; Kok FJ; Grobbee DE · Journal of human hypertension · 2003
    Meta-analysis27 studies pooledCardiovascular Support forPotassium
  19. Twenty-Four-Hour Urinary Sodium and Potassium Excretion and Their Associations With Blood Pressure Among Adults in China: Baseline Survey of Action on Salt China.
    Li Y; Zhang P; Wu J; Ma J; Xu J; Zhang X; Luo R; Liu M; Sun Y; Li X; Tan M; He FJ; MacGregor GA; Li X · Hypertension (Dallas, Tex. : 1979) · 2021
    Cross-sectional study5,353 participantsCardiovascular Support forPotassium
  20. Dietary Sodium and Potassium Intake and Risk of Non-Fatal Cardiovascular Diseases: The Million Veteran Program.
    Wang DD; Li Y; Nguyen XT; Song RJ; Ho YL; Hu FB; Willett WC; Wilson PWF; Cho K; Gaziano JM; Djoussé L; On Behalf Of The Va Million Veteran Program · Nutrients · 2022
    Cohort study180,156 participantsCardiovascular Support forPotassium