Zinc Magnesium & Vitamin B6

Zinc Magnesium & Vitamin B6

Sierra Fit4.7 (922 ratings)
Format:Capsule Quantity: 90 Capsule(s) · 30 servings
Goals
$5.00 $0.16 per serving

About this product

Magnesium provides the clearest nutritional contribution, with 300 mg elemental magnesium supporting normal muscle and bone functions when intake is low. Zinc at 20 mg and B6 at 7 mg add nutritional support, but the combination does not establish extra testosterone, strength or training benefits when needs are already met.

The mineral forms are named, but their proportions are missing. Magnesium includes citrate and oxide, and zinc includes aspartate and L-methionine; the oxide share limits confidence in the magnesium mixture, while benefits from magnesium L-threonate cannot be assumed for these sources.

The low serving cost and short nutrient list are practical strengths, although lasting stress relief and direct cognitive benefits remain uncertain. Serving descriptions also differ between the package details and the selected serving used in the supplied findings, so confirming the current label is necessary before relying on the stated amounts.

Who is it for
  • Adults with low magnesium or zinc intake who want a small nutrient combination
Best for
  • Supporting normal muscle and bone nutrition when intake falls short

Pros

  • Elemental magnesium and zinc amounts are disclosed
  • Mineral source identities are named
  • Short active list keeps the combination manageable
  • Low serving cost

Cons

  • Citrate and oxide proportions are unknown
  • The oxide component limits the appeal of the magnesium source
  • No established added testosterone or training advantage from the combination
  • Copper content is not established

Warnings

  • The 300 mg magnesium mixture includes oxide, which may loosen stools; consider tolerance before adding other magnesium sources.
  • The package details and selected-serving description disagree on capsule count; confirm the current label to avoid taking an unintended amount.

Product analysis

64 out of 100

Zinc Magnesium & Vitamin B6 can help fill nutrient gaps involved in normal bone, muscle and energy functions. Its magnesium blend includes lower-absorption oxide, and the undisclosed proportions make the mixture harder to judge.

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

Nutrient Quality51

The zinc blend uses favorable forms, although their proportions are not disclosed. Magnesium includes lower-absorption oxide, while vitamin B6 quality remains uncertain.

Ingredient Transparency80

Ingredient amounts are disclosed and many forms are named. Undisclosed shares within mixtures make their exact composition harder to compare.

Value For Money57

Zinc provides favorable value at the serving cost. Magnesium is less compelling because the blend includes oxide and does not disclose its proportions.

Customer Satisfaction80

Customer ratings are strongly positive. The larger review base gives a broader picture of customer satisfaction.

Product Focus63

Normal mineral and vitamin nutrition is the clearest purpose, particularly when intake is low. The much wider claims for testosterone, cognition and fitness do not establish added benefits in adequately nourished adults.

Format
Capsule
Container
90 Capsule(s)
Per serving
$0.16
Customer rating
4.7 · 922 ratings
Report analysis

Goals

Immunity
Impact
Highest effect
B Ingredient FitD PathwaysA+ EvidenceA+ Formulation Logic
Magnesium · 300 mgZinc · 20 mg
Study evidence
Magnesium Supportive 8 studies
Zinc Supportive 73 studies
Impact
Highest effect
A- Ingredient FitA+ PathwaysA- EvidenceA+ Formulation Logic
Magnesium · 300 mgZinc · 20 mg
Study evidence
Magnesium Supportive 114 studies
Zinc Supportive 60 studies
Impact
High effect
B+ Ingredient FitC PathwaysB EvidenceA+ Formulation Logic
Magnesium · 300 mgVitamin B6 · 7 mg
Study evidence
Magnesium Supportive 13 studies
Zinc Supportive 9 studies
Impact
Highest effect
B+ Ingredient FitB- PathwaysA EvidenceA+ Formulation Logic
Magnesium · 300 mgZinc · 20 mg
Study evidence
Magnesium Disputed 5 studies
Zinc Disputed 7 studies
Impact
High effect
C Ingredient FitD+ PathwaysA- EvidenceA+ Formulation Logic
Magnesium · 300 mgVitamin B6 · 7 mg
Study evidence
Magnesium Supportive 158 studies
Vitamin B6 Supportive 44 studies
Impact
High effect
B+ Ingredient FitD- PathwaysB EvidenceA+ Formulation Logic
Zinc · 20 mgMagnesium · 300 mg
Study evidence
Magnesium Supportive 50 studies
Zinc Supportive 130 studies

Ingredients

IngredientAmount per servingScore
Vitamin B6 (Pyridoxine Hydrochloride)
7 mg
Magnesium (Magnesium Citrate, Magnesium Oxide)
300 mg 58
Zinc (Zinc Aspartate, Zinc L-Monomethionine)
20 mg 74
Gluten Free Adults 18–50 Dairy Free No Allergies
Report overview
B+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyB+ Value
+4
The serving provides 20 mg zinc at a moderate cost per serving. It combines zinc aspartate and zinc l-methionine, but the amounts of each form are unknown. The copper amount is unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability84

It combines zinc aspartate and zinc l-methionine, but the amounts of each form are unknown.
Zinc Form Bioavailability
The blend contains zinc aspartate and zinc l-methionine; their proportions are unknown.

Dose, Safety & Label Transparency61

The zinc amount is clearly stated. The copper amount is unknown, so the zinc-to-copper balance is unclear.
Elemental Dose Transparency
The label states the elemental zinc amount and source.
Zinc Dosage Safety & Effectiveness
20 mg can contribute to zinc maintenance.
Zinc-to-Copper Mineral Balance
The copper amount is unknown, so the zinc-to-copper balance is unclear.

Value80

The cost per serving is moderate.
Price Per Serving Efficiency
The cost per serving is moderate.
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD Value
+6
A serving provides 300 mg of magnesium at a low whole-product cost per serving. The magnesium sources are magnesium citrate and magnesium oxide. Their proportions are not disclosed.
How this ingredient is rated

Active Ingredient Quality & Bioavailability21

The magnesium sources are magnesium citrate and magnesium oxide. Their proportions are not disclosed. No specific branded or fully reacted magnesium claim is given.
Magnesium Form & Absorption Potential
The magnesium sources are magnesium citrate and magnesium oxide. Their proportions are not disclosed.
Patented Materials & Chelation Quality
No specific branded or fully reacted magnesium claim is given.

Dose, Safety & Label Transparency100

The serving provides 300 mg of magnesium. A supporting ingredient is included, but its identity is not specified.
Elemental Yield Transparency
The label states 300 mg of elemental magnesium per serving.
Therapeutic Dosage Alignment
The serving provides 300 mg of magnesium.
Synergistic Formulation Logic
A supporting ingredient is included, but its identity is not specified.

Value48

The whole-product cost per serving is low.
Price Per Elemental Quality
The whole-product cost per serving is low.
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. The Effects of the AGE Inhibitor Pyridoxamine on Bone in Older Women With Type 2 Diabetes: A Randomized Clinical Trial.
    Brossfield AV; McMahon DJ; Fernando J; Omeragic B; Majeed R; Agarwal S; Sroga GE; Wang B; Vashishth D; Rubin MR · The Journal of clinical endocrinology and metabolism · 2025
    Randomized trial55 participantsBone Health forVitamin B6
  7. Dietary B vitamin intake and risk of hip fracture: the Singapore Chinese Health Study.
    Dai Z; Wang R; Ang LW; Yuan JM; Koh WP · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2014
    Cohort study63,257 participantsBone Health forVitamin B6
  8. Hip fracture patients may be vitamin B6 deficient. Controlled study of serum pyridoxal-5'-phosphate.
    Reynolds TM; Marshall PD; Brain AM · Acta orthopaedica Scandinavica · 1993
    Case-control study103 participantsBone Health forVitamin B6
  9. Degree of mineralization-related collagen crosslinking in the femoral neck cancellous bone in cases of hip fracture and controls.
    Saito M; Fujii K; Marumo K · Calcified tissue international · 2006
    Case-control study50 participantsBone Health forVitamin B6
  10. Adequate Intake and Supplementation of B Vitamins, in Particular Folic Acid, can Play a Protective Role in Bone Health.
    Rondanelli M; Tartara A; Fossari F; Vecchio V; Faliva MA; Naso M; Perna S; Nichetti M; Peroni G · Current aging science · 2022
    Narrative review35,298 participants29 studies pooledBone Health forVitamin B6
  11. Increased incidence of fractures in middle-aged and elderly men with low intakes of phosphorus and zinc.
    Elmståhl S; Gullberg B; Janzon L; Johnell O; Elmståhl B · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 1999
    Cohort study6,576 participantsBone Health forZinc
  12. Zinc Supplementation Increases Procollagen Type 1 Amino-Terminal Propeptide in Premenarcheal Girls: A Randomized Controlled Trial.
    Berger PK; Pollock NK; Laing EM; Chertin V; Bernard PJ; Grider A; Shapses SA; Ding KH; Isales CM; Lewis RD · The Journal of nutrition · 2016
    Randomized trial147 participantsBone Health forZinc
  13. Randomized controlled trial of prenatal zinc supplementation and fetal bone growth.
    Merialdi M; Caulfield LE; Zavaleta N; Figueroa A; Costigan KA; Dominici F; Dipietro JA · The American journal of clinical nutrition · 2004
    Randomized trial242 participantsBone Health forZinc
  14. The effects of zinc supplementation on serum zinc, alkaline phosphatase activity and fracture healing of bones.
    Sadighi A; Roshan MM; Moradi A; Ostadrahimi A · Saudi medical journal · 2009
    Randomized trial60 participantsBone Health forZinc
  15. Is Zinc an Important Trace Element on Bone-Related Diseases and Complications? A Meta-analysis and Systematic Review from Serum Level, Dietary Intake, and Supplementation Aspects.
    Ceylan MN; Akdas S; Yazihan N · Biological trace element research · 2021
    Meta-analysis40 studies pooledBone Health forZinc
  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