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Target-Mins Magnesium Caps With Silica 300 mg

Country Life
4.8
★ ★ ★ ★ ★
(1200 ratings)
Horsetail 43 mg
Magnesium 300 mg
Product Image
Score78
A useful magnesium amount and convenient capsule are tempered by form-split ambiguity. Oxide and unstandardized horsetail keep quality from a higher tier.
How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:
General Health
Cardiovascular Support
Heart Health
Energy
Stress Relief
Testosterone Support
Fitness

Score 78

A useful magnesium amount and convenient capsule are tempered by form-split ambiguity. Oxide and unstandardized horsetail keep quality from a higher tier.
How scoring works
$12.99($0.21 per serving)
iHerb
$ 12.99
Amazon
$ 12.99
Walmart
$ 13.64
Vitacost
$ 12.99
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Analysis

The serving states 300 mg magnesium across alpha-ketoglutarate, aspartate, citrate, oxide, and taurate forms. Citrate and taurate improve the profile, while oxide is less efficiently absorbed.

Listing 300 mg beside every form creates ambiguity about how the elemental total is divided. Horsetail extract supplies 43 mg silica but lacks species and standardization details.

A one-capsule serving and 60-serving supply offer good serving value. The formula fits broad magnesium use better than shoppers who want a precise glycinate-only or citrate-only dose.

Who is it for
  • Adults seeking broad magnesium support
  • Users who prefer one capsule per serving
  • People comfortable with a mixed-form product
Best for
  • Daily magnesium coverage
  • Muscle and nerve support
  • Convenient long-term use

Pros

  • Provides 300 mg magnesium
  • Includes citrate and taurate
  • One-capsule serving
  • 60 servings per container

Cons

  • Includes magnesium oxide
  • Amount per magnesium form is unclear
  • Horsetail species is not stated
  • Silica standardization is absent

Warnings

  • A 300 mg magnesium serving may cause loose stools or cramping, especially because oxide and citrate are included.
  • Magnesium can reduce absorption of levothyroxine and some antibiotics when taken too close together.
  • Horsetail may have a mild diuretic effect and may not suit users already taking diuretic medicines.

Nutrient quality

83 Highest impact

Several useful magnesium forms and substantial dosing support the formula. Oxide and incomplete horsetail characterization prevent consistently high ingredient quality.

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Ingredient transparency

72 High impact

The principal amounts and magnesium forms are disclosed. The form split, complete directions, inactive ingredients, and horsetail standardization are missing.

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Customer satisfaction

71 High impact

The average customer rating is very strong. A large rating base makes the average dependable, while specific review experiences were not supplied.

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Value for money

86 Highest impact

Favorable serving economics and meaningful mineral amounts support good value. Mixed magnesium forms keep quality below the strongest chelated alternatives.

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Report analysis

Goals

General Health
Impact
Highest effect
A+ Goal FitB+ Strength of SupportC- CoverageA- Formula Quality
Magnesium · 300 mg

A clearly stated 300 mg magnesium amount provides meaningful support for energy metabolism, muscle function, and nervous-system regulation. Citrate, aspartate, taurate, and alpha-ketoglutarate improve the blend, but magnesium oxide lowers its overall absorption potential.

The focused mineral formula has strong depth rather than broad pathway coverage. Exact amounts for each magnesium form are not separated, and the purpose of the added horsetail-derived silica is less central to general wellness.

Study evidence
Magnesium Supportive 114 studies
Cardiovascular Support
Impact
Highest effect
A- Goal FitA- Strength of SupportC+ CoverageB- Formula Quality
Magnesium · 300 mg

The 300 mg elemental magnesium amount directly supports vascular relaxation and stable heart rhythm. Citrate, aspartate, and taurate improve the blend, although magnesium oxide has lower absorption.

The elemental amount is clear, but no patented chelation or uptake cofactor is identified. Supplemental magnesium can accumulate when kidney function is impaired, so the 300 mg dose warrants medical guidance in that situation.

Study evidence
Magnesium Supportive 123 studies
Heart Health
Impact
High effect
B+ Goal FitB+ Strength of SupportC- CoverageB Formula Quality
Magnesium · 300 mg

Magnesium directly supports heart rhythm and vascular tone, and the disclosed amount is meaningful. Taurinate, citrate, and other sources broaden absorption potential.

Included magnesium oxide lowers the overall form quality, while silica contributes little direct heart support. The focused mineral dose still provides useful depth in a single cardiovascular pathway.

Study evidence
Magnesium Supportive 158 studies
Energy
Impact
High effect
A- Goal FitB+ Strength of SupportC- CoverageC+ Formula Quality
Magnesium · 300 mg

Magnesium supports energy metabolism, muscle function, and normal nervous-system activity. The 300 mg elemental amount is practical and clearly stated.

The blend combines citrate, aspartate, taurate, and alpha-ketoglutarate with lower-absorption magnesium oxide. Horsetail-derived silica adds a peripheral ingredient without resolving the mixed magnesium quality.

Study evidence
Magnesium Supportive 4 studies
Stress Relief
Impact
High effect
B+ Goal FitB Strength of SupportC- CoverageC+ Formula Quality
Magnesium · 300 mg

The magnesium amount is meaningful for nervous-system support and combines citrate, taurate, aspartate, and alpha-ketoglutarate forms. Magnesium oxide lowers the average absorption quality, while the long list of forms creates more label complexity than clear functional benefit.

The formula still provides useful depth for one foundational stress pathway. Horsetail-derived silica has no established role in stress relief and acts mainly as a peripheral add-on.

Study evidence
Magnesium Supportive 13 studies
Testosterone Support
Impact
High effect
B+ Goal FitB- Strength of SupportD+ CoverageB Formula Quality
Magnesium · 300 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. Target-Mins Magnesium Caps With Silica 300 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 Alpha-Ketoglutarate, Magnesium Aspartate, Magnesium Citrate, Magnesium Oxide, Taurinate)
300 mg
Horsetail extract (Silica)
43 mg
Gluten Free Adults 18–50 Kosher Dairy Free Sugar Free Vegetarian
Report overview
Horsetail (Silica) · 43 mg OverallScore74
D+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB- Value

The capsule discloses a substantial silica amount from horsetail extract, but it omits a standardization percentage, Latin species, and plant part. The active amount is transparent and comfortably above the higher-potency threshold. Serving cost is reasonable for an unstandardized extract, though not the lowest among the compared products.

D- Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyA+ Value
+1

The magnesium blend combines better-absorbed forms with oxide, creating mixed absorption potential. The elemental amount is clearly disclosed and falls within the standard therapeutic range. The focused formula lacks added cofactors, while its cost remains relatively economical.

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Sources

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

  1. 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
  2. Hospital-Acquired Dysmagnesemia and In-Hospital Mortality.
    Cheungpasitporn W; Thongprayoon C; Chewcharat A; Petnak T; Mao MA; Davis PW; Bathini T; Vallabhajosyula S; Qureshi F; Erickson SB · Medical sciences (Basel, Switzerland) · 2024
    Cohort study26,020 participantsGeneral Health forMagnesium
  3. 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
  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. 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
  19. 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
  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 Fitness forMagnesium
  21. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  22. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium
  23. Dietary Magnesium May Be Protective for Aging of Bone and Skeletal Muscle in Middle and Younger Older Age Men and Women: Cross-Sectional Findings from the UK Biobank Cohort.
    Welch AA; Skinner J; Hickson M · Nutrients · 2018
    Cross-sectional study156,575 participantsFitness forMagnesium
  24. Dietary Magnesium Is Positively Associated With Skeletal Muscle Power and Indices of Muscle Mass and May Attenuate the Association Between Circulating C-Reactive Protein and Muscle Mass in Women.
    Welch AA; Kelaiditi E; Jennings A; Steves CJ; Spector TD; MacGregor A · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2016
    Cross-sectional study2,570 participantsFitness forMagnesium
  25. Nutritional intake as a determinant of high-speed resistance and multicomponent training efficacy on strength in older women at risk of sarcopenia. A randomized clinical trial.
    Polo-Ferrero L; Recio-Rodriguez JI; González-Manzano S; Martín-Vallejo J; Barbero-Iglesias FJ; Montero-Errasquín B; Cruz-Jentoft AJ; Méndez-Sánchez R · Clinical nutrition (Edinburgh, Scotland) · 2025
    Randomized trial80 participantsFitness forMagnesium
  26. Minerals and Sarcopenia in Older Adults: An Updated Systematic Review.
    van Dronkelaar C; Fultinga M; Hummel M; Kruizenga H; Weijs PJM; Tieland M · Journal of the American Medical Directors Association · 2023
    Systematic review45 studies pooledFitness forMagnesium
  27. 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
  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. 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
  35. 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
  36. 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
  37. 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
  38. 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
  39. 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
  40. 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
  41. 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
  42. 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
  43. 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