Z-Matrix

Z-Matrix

Evlution Nutrition4.7 (2,842 ratings)
Format:Capsule Quantity: 240 Capsule(s) · 60 servings
Goals

About this product

Relaxation and sleep are the clearest reasons to consider the combination. L-theanine at 200 mg may help short-term calm and some aspects of sleep quality, although lasting mood changes and immediate sedation are not established. Magnesium can add nutritional support, particularly when intake is low or sleep complaints are present.

The 450 mg magnesium serving is substantial, and magnesium aspartate is clearly identified. Zinc supplies 30 mg from two named sources, but their proportions and the copper amount are unknown. Those nutrient amounts do not establish better testosterone levels, strength or training results in people who already get enough.

Value looks favorable for the magnesium and theanine supplied. The small folate contribution and limited information about some preparations make the broader brain, energy and productivity claims less persuasive. The practical fit depends more on wanting calm and meeting mineral needs than on the long list of possible uses.

Who is it for
  • Adults seeking relaxation support alongside a meaningful magnesium intake
  • People with low mineral intake who can account for zinc and magnesium from other supplements
Best for
  • Short-term calm and selected sleep-quality support
  • Magnesium supplementation using a clearly identified aspartate source

Pros

  • Theanine amount is relevant to the supplied relaxation and sleep findings
  • Clearly identifies the magnesium source
  • Offers favorable value for magnesium and theanine
  • Names both zinc sources

Cons

  • Zinc source proportions and copper content remain unclear
  • Broader productivity and testosterone benefits are not established
  • Small folate amount adds limited nutritional coverage

Warnings

  • The serving already provides 450 mg magnesium and 30 mg zinc; adding separate mineral supplements can unnecessarily increase daily exposure.

Product analysis

62 out of 100

Z-Matrix combines minerals, vitamins and theanine in a broad supplement, with useful zinc and magnesium forms. The unclear proportions within its zinc combination make an exact comparison harder.

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

Nutrient Quality50

The zinc forms have good absorption potential, and magnesium aspartate is a reasonably supported choice. Some other ingredient forms remain unclear, so these strengths do not extend equally to the full formula.

Ingredient Transparency71

Ingredient amounts and most forms are disclosed. The proportions within the zinc combination and a few form details remain unclear.

Value For Money57

Magnesium and theanine offer good value at the serving price, with zinc providing reasonable value. The other nutrients have less certain value.

Customer Satisfaction86

Customer feedback is favorable across a substantial number of ratings. Those opinions describe satisfaction, rather than proving health benefits or safety.

Product Focus55

The formula has useful support across a very broad range of goals. That reach makes its purpose more diffuse than a supplement aimed at one specific need.

Format
Capsule
Container
240 Capsule(s)
Per serving
$0.38
Customer rating
4.7 · 2,842 ratings
Report analysis

Goals

Stress Relief
Impact
High effect
B+ Ingredient FitA+ PathwaysB EvidenceA+ Formulation Logic
Vitamin D · 25 mcgMagnesium · 450 mgFolate · 100 mcgVitamin B6 · 11 mgTheanine · 200 mg
Study evidence
Folate Supportive 19 studies
Magnesium Supportive 13 studies
Theanine Supportive 16 studies
Vitamin D Supportive 41 studies
Zinc Supportive 9 studies
Everyday Health
Impact
Highest effect
B- Ingredient FitA+ PathwaysA- EvidenceA+ Formulation Logic
Folate · 100 mcgVitamin D · 25 mcgMagnesium · 450 mgZinc · 30 mg
Study evidence
Folate Supportive 80 studies
Magnesium Supportive 114 studies
Vitamin D Supportive 115 studies
Zinc Supportive 60 studies
Brain Health
Impact
Highest effect
B Ingredient FitB+ PathwaysA EvidenceA+ Formulation Logic
Folate · 100 mcgVitamin B6 · 11 mgVitamin D · 25 mcgMagnesium · 450 mg
Study evidence
Folate Supportive 90 studies
Magnesium Supportive 86 studies
Theanine Supportive 17 studies
Vitamin B6 Supportive 29 studies
Vitamin D Supportive 94 studies
Zinc Supportive 38 studies
Energy
Impact
High effect
B- Ingredient FitF PathwaysA EvidenceA+ Formulation Logic
Vitamin D · 25 mcgMagnesium · 450 mg
Study evidence
Magnesium Supportive 4 studies
Theanine Not classified

No linked studies yet.

Vitamin D Supportive 32 studies
Immunity
Impact
Highest effect
B Ingredient FitB+ PathwaysA+ EvidenceA+ Formulation Logic
Magnesium · 450 mgZinc · 30 mgVitamin D · 25 mcg
Study evidence
Magnesium Supportive 8 studies
Vitamin D Supportive 85 studies
Zinc Supportive 73 studies
Heart Health
Impact
High effect
C+ Ingredient FitB PathwaysA- EvidenceA+ Formulation Logic
Magnesium · 450 mgVitamin B6 · 11 mgFolate · 100 mcgVitamin D · 25 mcg
Study evidence
Folate Supportive 116 studies
Magnesium Supportive 158 studies
Vitamin B6 Supportive 44 studies
Vitamin D Mixed 164 studies

Ingredients

IngredientAmount per servingScore
Vitamin D3 (Cholecalciferol)
25 mcg
Vitamin B6 (Pyridoxine Hydrochloride)
11 mg
Folic Acid
100 mcg 16
Magnesium (Magnesium Aspartate)
450 mg
Zinc (Zinc Mono-L-Methionine, Zinc Aspartate)
30 mg 76
L-Theanine
200 mg 88
BioPerine (Black Pepper Fruit Extract)
5 mg
Adults 18–50 Women
Report overview
Theanine · 200 mg OverallScore88
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
Each serving provides 200 mg of L-Theanine, an amount associated with calming and focus support, at a moderate cost per 100 mg. The available details do not specify a branded form or a purity claim.
How this ingredient is rated

Active Ingredient Quality & Bioavailability80

The label specifies L-Theanine. The available details do not specify a branded form or a purity claim.
Isomer Specificity (L-Theanine)
L-Theanine is the active form associated with calming and focus.
Branded Forms & Purity Standards
No branded form or additional purity claim is specified in the available details.

Dose, Safety & Label Transparency100

The serving provides 200 mg of L-Theanine, an amount associated with calming and focus support. The amount is listed separately.
Theanine Dosage Efficacy
The serving provides 200 mg, an amount associated with calming and focus support.
Label Transparency & Blends
The L-Theanine amount is listed separately.

Value80

The cost per 100 mg of theanine is moderate.
Price per 100mg L-Theanine
The cost per 100 mg of theanine is moderate.
B+ Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyB+ Value
+9
Report alternatives

Sources

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

  1. Association between RBC folate and lumbar bone mineral density in postmenopausal women, a cross-sectional study from NHANES 2009-2018.
    Wei H; Jin Z; Zhou L; Tang G; Chai S; Che X; Tan Y; Zeng W · Frontiers in endocrinology · 2025
    Cross-sectional study1,315 participantsBone Health forFolate
  2. Genetic variants modify the associations of concentrations of methylmalonic acid, vitamin B-12, vitamin B-6, and folate with bone mineral density.
    Liu CT; Karasik D; Xu H; Zhou Y; Broe K; Cupples LA; Cpgm de Groot L; Ham A; Hannan MT; Hsu YH; Jacques P; McLean RR; Paul L; Selhub J; Trajanoska K; van der Velde N; van Schoor N; Kiel DP · The American journal of clinical nutrition · 2021
    Cohort study4,310 participantsBone Health forFolate
  3. 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 forFolate Bone Health forVitamin B6
  4. Relation of homocysteine, folate, and vitamin B12 to bone mineral density of postmenopausal women.
    Cagnacci A; Baldassari F; Rivolta G; Arangino S; Volpe A · Bone · 2004
    Cross-sectional study161 participantsBone Health forFolate
  5. Dietary intake of folate, but not vitamin B2 or B12, is associated with increased bone mineral density 5 years after the menopause: results from a 10-year follow-up study in early postmenopausal women.
    Rejnmark L; Vestergaard P; Hermann AP; Brot C; Eiken P; Mosekilde L · Calcified tissue international · 2008
    Cohort study1,869 participantsBone Health forFolate
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. Pregnancy vitamin D supplementation and offspring bone mineral density in childhood follow-up of a randomized controlled trial.
    Moon RJ; D' Angelo S; Curtis EM; Ward KA; Crozier SR; Schoenmakers I; Javaid MK; Bishop NJ; Godfrey KM; Cooper C; Harvey NC; MAVIDOS Trial Group · The American journal of clinical nutrition · 2024
    Randomized trial454 participantsBone Health forVitamin D
  16. Vitamin D analogs and bone: preclinical and clinical studies with eldecalcitol.
    Matsumoto T; Takano T; Saito H; Takahashi F · BoneKEy reports · 2014
    Narrative reviewBone Health forVitamin D
  17. Efficacy of vitamin D fortified foods on bone mineral density and serum bone biomarkers: A systematic review and meta-analysis of interventional studies.
    Tangestani H; Djafarian K; Emamat H; Arabzadegan N; Shab-Bidar S · Critical reviews in food science and nutrition · 2020
    Meta-analysis1,786 participants20 studies pooledBone Health forVitamin D
  18. Cholecalciferol Supplementation Attenuates Bone Loss in Incident Kidney Transplant Recipients: A Prespecified Secondary Endpoint Analysis of a Randomized Controlled Trial.
    Tsujita M; Doi Y; Obi Y; Hamano T; Tomosugi T; Futamura K; Okada M; Hiramitsu T; Goto N; Isaka Y; Takeda A; Narumi S; Watarai Y · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2022
    Randomized trial193 participantsBone Health forVitamin D
  19. Vitamin D supplementation and bone health in post-menopausal women: a 24-month randomized controlled intervention with enhanced bioavailability formulations.
    Rasool N; Munir Y · European journal of clinical nutrition · 2026
    Randomized trial612 participantsBone Health forVitamin D
  20. 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