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Coral Calcium 1000 mg

4.8
★ ★ ★ ★ ★
(1271 ratings)
Calcium 1000 mg
Magnesium 500 mg
Product Image
Score64
Substantial calcium and vitamin D3 are useful, but unclear calcium form and confusing duplicate magnesium entries undermine transparency and dosing confidence.
How scoring works
Capsule
Quantity:120 Capsule(s) • (30 servings)
Goals:
General Health
Bone Health

Score 64

Substantial calcium and vitamin D3 are useful, but unclear calcium form and confusing duplicate magnesium entries undermine transparency and dosing confidence.
How scoring works
$14.65($0.48 per serving)
iHerb
$ 15.99
Amazon
$ 14.65
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Analysis

One gram of calcium and vitamin D3 provide a substantial bone-support base. The formula also lists a large magnesium contribution that could help balance calcium intake.

The calcium form is not identified, preventing a proper absorption assessment. Magnesium appears in repeated 500 mg entries tied to coral calcium and oxide, making the true total unclear.

Four capsules per serving create pill burden, and the ambiguous magnesium label complicates safe dosing. Magnesium oxide may loosen stools, while the full calcium amount should be checked against food intake.

Who is it for
  • Adults seeking high-dose calcium with vitamin D3
  • People comfortable with a four-capsule serving
Best for
  • Large calcium intake gaps
  • Bone support with vitamin D3

Pros

  • Provides a substantial calcium amount
  • Includes vitamin D3
  • Adds magnesium to the mineral profile

Cons

  • Calcium form is unspecified
  • Magnesium entries make the total unclear
  • Relies partly on magnesium oxide

Warnings

  • The unclear high magnesium exposure may cause diarrhea or cramping
  • A full gram of supplemental calcium may be excessive when dietary intake is already adequate
  • Separate calcium from thyroid hormone, bisphosphonates, and certain antibiotics

Nutrient quality

57 Moderate impact

The calcium compound is unspecified, while coral-derived magnesium and magnesium oxide have limited absorption potential, and the 1,000 mg calcium amount is too concentrated for one sitting, and 500 mg magnesium is also aggressive for some users. The concentrated calcium and magnesium amounts may reduce absorption efficiency and digestive comfort, while calcium, magnesium, and vitamin D form a coherent mineral-support combination.

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Ingredient transparency

64 Moderate impact

Total mineral amounts are shown, but repeated amounts across forms make each form contribution unclear, and no proprietary blend hides the amount of a listed core mineral. Serving count is supplied, but complete daily-use directions are not provided, while inactive ingredients and excipients are not included in the supplied label details.

.

Customer satisfaction

73 High impact

The supplied average rating is strong, and substantial review volume gives the average rating useful credibility. Specific review themes are unavailable, so repeated negatives and real-world fit remain uncertain.

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Value for money

62 Moderate impact

Weak forms or concentrated dosing make the formula difficult to justify on quality alone, and the high serving cost weakens value relative to similar mineral formulas. The listed formula is focused and does not appear padded with low-value active ingredients, while form, dose, or serving-value limitations make it less competitive than similar products.

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Goals

General Health
General Health
Impact
High effect
A Goal FitC- Strength of SupportC CoverageB+ Formula Quality
Vitamin D · 10 mcgMagnesium · 500 mg

Calcium, magnesium, and vitamin D3 support structural health and mineral metabolism. The formula provides broad foundational coverage, but its magnesium sources have weak systemic absorption.

The 500 mg magnesium amount may cause digestive discomfort, especially because oxide is included. Clear elemental labeling and vitamin D synergy do not fully offset the low-quality mineral forms.

Study evidence
Magnesium Supportive 114 studies
Vitamin D Supportive 115 studies
Bone Health
Bone Health
Impact
High effect
A Goal FitD+ Strength of SupportC+ CoverageB Formula Quality
Magnesium · 500 mgCalcium · 1000 mgVitamin D · 10 mcg

Calcium, magnesium, and vitamin D3 provide direct skeletal support. The formula covers mineral supply and vitamin D-dependent calcium use.

The large calcium serving and weakly absorbed magnesium forms reduce practical effectiveness. Splitting the serving may improve calcium use and reduce digestive discomfort from the magnesium.

Study evidence
Calcium Supportive 144 studies
Magnesium Supportive 48 studies
Vitamin D Supportive 202 studies
Digestive Health
Digestive Health
Impact
Moderate effect
B- Goal FitC Strength of SupportD- CoverageC- Formula Quality
Vitamin D · 10 mcgMagnesium · 500 mg

Magnesium may support bowel motility, but coral-derived material and oxide are poorly suited to predictable digestive use. The large calcium amount may compete with magnesium and can worsen constipation in some people.

The elemental amounts are clear, while source proportions and absorption quality remain weak. The upper-end magnesium serving may cause cramping or diarrhea despite its low-absorption forms.

Study evidence
Magnesium Supportive 50 studies
Vitamin D Supportive 49 studies
Stress Relief
Stress Relief
Impact
Moderate effect
D+ Goal FitC Strength of SupportD+ CoverageC Formula Quality
Vitamin D · 10 mcgMagnesium · 500 mg

The high listed magnesium amount may provide foundational nervous-system support when intake is inadequate. Magnesium oxide and an unclear coral-calcium contribution limit confidence in absorption and usable magnesium yield.

Calcium and vitamin D3 make the formula better aligned with bone nutrition than direct stress relief. The four-capsule serving is burdensome, and magnesium oxide may cause digestive discomfort without providing the gentler profile of glycinate.

Study evidence
Magnesium Supportive 13 studies
Vitamin D Supportive 41 studies
Energy
Energy
Impact
Moderate effect
C Goal FitD+ Strength of SupportD- CoverageC+ Formula Quality
Vitamin D · 10 mcgMagnesium · 500 mg

Magnesium is relevant to ATP production and muscle function, but the supplied forms are coral-derived material and magnesium oxide. Their weak absorption potential limits how much the large labeled amount may contribute to energy.

Calcium and vitamin D make the formula more coherent for bone support than for energy. The large magnesium serving may cause loose stools or stomach discomfort, especially because poorly absorbed magnesium oxide can remain in the digestive tract.

Study evidence
Magnesium Supportive 4 studies
Vitamin D Supportive 32 studies
Cardiovascular Support
Cardiovascular Support
Impact
Moderate effect
D+ Goal FitC Strength of SupportD- CoverageC Formula Quality
Magnesium · 500 mgVitamin D · 10 mcg

Magnesium may support vascular tone, but the large calcium load and vitamin D make this primarily a bone-mineral formula. The blend does not target lipids, endothelial antioxidants, or cardiac energy.

Calcium source detail is limited and much of the magnesium appears to come from poorly absorbed oxide. The large mineral load may cause constipation or diarrhea and warrants caution in people prone to kidney stones or high blood calcium.

Study evidence
Magnesium Supportive 123 studies
Vitamin D Mixed 170 studies
Heart Health
Heart Health
Impact
Moderate effect
C Goal FitD- Strength of SupportD CoverageD+ Formula Quality
Magnesium · 500 mgVitamin D · 10 mcg

Magnesium has a direct role in vascular tone and cardiac rhythm, while vitamin D adds limited supporting relevance. The calcium-heavy formula is primarily for bone health and uses poorly absorbed coral and oxide magnesium sources.

The elemental magnesium amount reaches the upper boundary of the preferred range but may have a greater digestive effect than systemic value. Four capsules and low-quality forms reduce practical heart-health support.

Study evidence
Magnesium Supportive 158 studies
Vitamin D Mixed 164 studies

Ingredients

IngredientAmount per serving
Vitamin D3 (Cholecalciferol)
 10 mcg
Calcium
1000 mg
Magnesium (Coral Calcium, Magnesium Oxide)
 500 mg
Gluten Free Adults 18–50
Report overview
Calcium · 1000 mg OverallScore48
F Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyD+ Value

The label provides 1,000 mg of elemental calcium but does not identify its calcium compound, making absorption potential uncertain. That serving is larger than the body generally absorbs efficiently at once. Vitamin D3 is a useful cofactor, while the cost per serving is moderate rather than especially low.

View ingredientView products
Magnesium (Coral Calcium, Magnesium Oxide) · 500 mg OverallScore45
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyF Value

The magnesium sources are coral-derived material and magnesium oxide, both offering weak evidence of strong systemic absorption. Elemental labeling is clear, while the upper-end serving may be harder on digestion and vitamin D adds bone-health support. An above-median cost represents poor value for the low-absorption forms.

View ingredientView products
Loading alternative details
94 Performance

Cal/Mag 500 mg/250 mg

NaturesPlus
<p>Chelated calcium and magnesium provide a balanced, focused mineral formula with stronger form quality than products relying heavily on carbonate or oxide. The simple serving is easy to assess, though vitamin D and vitamin K are not included.</p>
92 Performance

Magnesium Bisglycinate Chelate

Healthy Origins
<p>TRAACS magnesium bisglycinate provides a well-absorbed form at a useful amount and avoids the weaker oxide forms found in many combinations. The powder covers magnesium only, so a separate calcium source is needed when both minerals are intended.</p>
92 Performance

Calcium Citrate Pure Powder

NOW
<p>Calcium citrate provides a well-absorbed, clearly disclosed calcium source in an adjustable powder. The focused formula omits magnesium, vitamin D, and vitamin K, so it works better as a targeted calcium option than as a complete replacement.</p>
87 Budget

600 Calcium Supplement

21st Century
<p>A straightforward calcium carbonate tablet provides a much lower-cost source of calcium at a practical supplemental amount. Carbonate works best with food, and the formula omits magnesium, vitamin D, and other bone-supporting cofactors found in broader products.</p>
86 Budget

Calcium Carbonate

NOW
<p>A pure calcium carbonate powder offers substantial calcium with excellent serving value and no unrelated actives. Food and stomach acid aid carbonate absorption, while the calcium-only design leaves magnesium and vitamin D uncovered.</p>
85 Budget

Calcium 600 with Vitamin D3

Nature's Bounty
<p>Calcium with vitamin D3 provides an economical, meaningfully dosed bone-support pairing. Calcium carbonate is best taken with food, and the formula does not replace the original magnesium coverage.</p>
94 Value

Krebs Magnesium Potassium Complex

Nature's Way
<p>Magnesium lysinate and malate provide favorable forms at a useful amount, with modest potassium adding complementary mineral support. Serving value is strong, but the formula requires a separate calcium source when calcium is also needed.</p>
90 Value

Calcium Citrate +D3 Petites

21st Century
<p>Calcium citrate with vitamin D3 combines a practical amount, favorable absorption, and accessible serving value. The focused formula does not provide magnesium, and missing excipient details modestly limit transparency.</p>
88 Value

Albion Chelated Calcium 180 mg

Swanson Ultra
<p>Calcium glycinate chelate with a small vitamin D3 addition offers a useful balance of form quality and value. The supplied product name and serving amount conflict, so the current label should be checked, and magnesium still needs separate coverage.</p>
Report alternatives

Sources

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

  1. Calcium supplementation during pregnancy and maternal and offspring bone health: a systematic review and meta-analysis.
    Tihtonen K; Korhonen P; Isojärvi J; Ojala R; Ashorn U; Ashorn P; Tammela O · Annals of the New York Academy of Sciences · 2022
    Meta-analysis1,566 participants7 studies pooledBone Health forCalcium
  2. Calcium supplementation and bone mineral density in postmenopausal women using estrogen replacement therapy.
    Haines CJ; Chung TK; Leung PC; Hsu SY; Leung DH · Bone · 1995
    Randomized trialBone Health forCalcium
  3. Bone turnover and the response to alendronate treatment in postmenopausal osteoporosis.
    Gonnelli S; Cepollaro C; Pondrelli C; Martini S; Montagnani A; Monaco R; Gennari C · Calcified tissue international · 1999
    Randomized trial100 participantsBone Health forCalcium
  4. Associations of dietary calcium intake with metabolic syndrome and bone mineral density among the Korean population: KNHANES 2008-2011.
    Kim MK; Chon SJ; Noe EB; Roh YH; Yun BH; Cho S; Choi YS; Lee BS; Seo SK · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2018
    Cross-sectional study14,705 participantsBone Health forCalcium
  5. Treatment with alendronate plus calcium, alendronate alone, or calcium alone for postmenopausal low bone mineral density.
    Bonnick S; Broy S; Kaiser F; Teutsch C; Rosenberg E; DeLucca P; Melton M · Current medical research and opinion · 2007
    Randomized trial701 participantsBone Health forCalcium
  6. Calcium and osteoporosis.
    Nordin BE · Nutrition (Burbank, Los Angeles County, Calif.) · 1998
    Meta-analysis20 studies pooledBone Health forCalcium
  7. Dietary calcium intake protects women consuming oral contraceptives from spine and hip bone loss.
    Teegarden D; Legowski P; Gunther CW; McCabe GP; Peacock M; Lyle RM · The Journal of clinical endocrinology and metabolism · 2005
    Randomized trial154 participantsBone Health forCalcium
  8. Relationship between bone mineral density changes and risk of fractures among patients receiving calcium with or without vitamin D supplementation: a meta-regression.
    Rabenda V; Bruyère O; Reginster JY · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2011
    Meta-analysis47,365 participants15 studies pooledBone Health forCalcium
  9. Calcium supplementation provides an extended window of opportunity for bone mass accretion after menarche.
    Rozen GS; Rennert G; Dodiuk-Gad RP; Rennert HS; Ish-Shalom N; Diab G; Raz B; Ish-Shalom S · The American journal of clinical nutrition · 2003
    Randomized trial100 participantsBone Health forCalcium
  10. Effect of milk and calcium supplementation on bone density and bone turnover in pregnant Chinese women: a randomized controlled trail.
    Liu Z; Qiu L; Chen YM; Su YX · Archives of gynecology and obstetrics · 2011
    Randomized trial36 participantsBone Health forCalcium
  11. What is the impact of daily oral supplementation of vitamin D3 (cholecalciferol) plus calcium on the incidence of hip fracture in older people? A systematic review and meta-analysis.
    Manoj P; Derwin R; George S · International journal of older people nursing · 2023
    Meta-analysis12,620 participants7 studies pooledBone Health forCalcium
  12. Calcium supplementation prevents seasonal bone loss and changes in biochemical markers of bone turnover in elderly New England women: a randomized placebo-controlled trial.
    Storm D; Eslin R; Porter ES; Musgrave K; Vereault D; Patton C; Kessenich C; Mohan S; Chen T; Holick MF; Rosen CJ · The Journal of clinical endocrinology and metabolism · 1998
    Randomized trial60 participantsBone Health forCalcium
  13. The effects of calcium supplementation (milk powder or tablets) and exercise on bone density in postmenopausal women.
    Prince R; Devine A; Dick I; Criddle A; Kerr D; Kent N; Price R; Randell A · Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 1995
    Randomized trial168 participantsBone Health forCalcium
  14. The efficacy of calcium supplementation alone in elderly Thai women over a 2-year period: a randomized controlled trial.
    Rajatanavin R; Chailurkit L; Saetung S; Thakkinstian A; Nimitphong H · Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2014
    Randomized trial404 participantsBone Health forCalcium
  15. Calcium-enriched foods and bone mass growth in prepubertal girls: a randomized, double-blind, placebo-controlled trial.
    Bonjour JP; Carrie AL; Ferrari S; Clavien H; Slosman D; Theintz G; Rizzoli R · The Journal of clinical investigation · 1997
    Randomized trial149 participantsBone Health forCalcium
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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 Cardiovascular Support Heart Health forVitamin D
  30. 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
  31. A Randomized Trial of Vitamin D Supplementation on Vascular Function in CKD.
    Kumar V; Yadav AK; Lal A; Kumar V; Singhal M; Billot L; Gupta KL; Banerjee D; Jha V · Journal of the American Society of Nephrology : JASN · 2017
    Randomized trial120 participantsCardiovascular Support forVitamin D
  32. Randomized, placebo-controlled, double-blind clinical trial on the contributions of vitamin D in the control of cardiovascular risk factors, depressive symptoms and suicide risk.
    Porto C; Petribu K; Barbosa N; Magalhães R; Lira C; Porto AB; Markman-Filho B; Lordsleem A; Calado E; Magalhães J; Sougey E; Silva T; Junio A; Bandeira F; Leão R · American heart journal plus : cardiology research and practice · 2025
    Randomized trial224 participantsCardiovascular Support forVitamin D
  33. Dose responses of vitamin D3 supplementation on arterial stiffness in overweight African Americans with vitamin D deficiency: A placebo controlled randomized trial.
    Raed A; Bhagatwala J; Zhu H; Pollock NK; Parikh SJ; Huang Y; Havens R; Kotak I; Guo DH; Dong Y · PloS one · 2017
    Randomized trial70 participantsCardiovascular Support forVitamin D
  34. Paricalcitol and endothelial function in chronic kidney disease trial.
    Zoccali C; Curatola G; Panuccio V; Tripepi R; Pizzini P; Versace M; Bolignano D; Cutrupi S; Politi R; Tripepi G; Ghiadoni L; Thadhani R; Mallamaci F · Hypertension (Dallas, Tex. : 1979) · 2015
    Randomized trial88 participantsCardiovascular Support Heart Health forVitamin D
  35. 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
  36. 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
  37. 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
  38. 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
  39. 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
  40. Effect of Vitamin D Supplementation on Human Gut Microbiota: A Systematic Review of Randomized Controlled Trials.
    Zeb F; Osaili T; Hashim M; Alkalbani N; Papandreou D; Cheikh Ismail L; Naja F; Radwan H; Hasan H; Obaid RS; Savvaidis I; AlBlooshi S; Alam I · Nutrition reviews · 2026
    Systematic review1,458 participants14 studies pooledDigestive Health forVitamin D
  41. Vitamin D3 Induced Decrease in IL-17 and Malondialdehyde, and Increase in IL-10 and Total Antioxidant Capacity Levels in Patients with Irritable Bowel Syndrome.
    Amani R; Abbasnezhad A; Hajiani E; Cheraghian B; Abdoli Z; Choghakhori R · Iranian journal of immunology : IJI · 2018
    Randomized trial90 participantsDigestive Health forVitamin D
  42. Effect of vitamin D on gastrointestinal symptoms and health-related quality of life in irritable bowel syndrome patients: a randomized double-blind clinical trial.
    Abbasnezhad A; Amani R; Hajiani E; Alavinejad P; Cheraghian B; Ghadiri A · Neurogastroenterology and motility · 2018
    Randomized trial90 participantsDigestive Health General Health forVitamin D
  43. Maternal vitamin D intakes during pregnancy and child health outcome.
    Nasantogtokh E; Ganmaa D; Altantuya S; Amgalan B; Enkhmaa D · The Journal of steroid biochemistry and molecular biology · 2023
    Randomized trial311 participantsDigestive Health forVitamin D
  44. Vitamin D metabolites and the gut microbiome in older men.
    Thomas RL; Jiang L; Adams JS; Xu ZZ; Shen J; Janssen S; Ackermann G; Vanderschueren D; Pauwels S; Knight R; Orwoll ES; Kado DM · Nature communications · 2020
    Cross-sectional study567 participantsDigestive Health forVitamin D
  45. 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
  46. 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
  47. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  48. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium
  49. Effect of Vitamin D Supplementation on Fatigue in Multiple Sclerosis: A Systematic Review and Meta-Analysis.
    López-Muñoz P; Torres-Costoso AI; Fernández-Rodríguez R; Guzmán-Pavón MJ; de Arenas-Arroyo SN; Basco-López JÁ; Reina-Gutiérrez S · Nutrients · 2023
    Meta-analysis345 participants5 studies pooledEnergy forVitamin D
  50. Vitamin D Supplementation in Adolescents and Young Adults With Juvenile Systemic Lupus Erythematosus for Improvement in Disease Activity and Fatigue Scores: A Randomized, Double-Blind, Placebo-Controlled Trial.
    Lima GL; Paupitz J; Aikawa NE; Takayama L; Bonfa E; Pereira RM · Arthritis care & research · 2016
    Randomized trial40 participantsEnergy forVitamin D
  51. Vitamin D in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome After COVID-19 or Vaccination: A Randomized Controlled Trial.
    Kodama S; Nakata M; Konishi N; Yoshino M; Fujisawa A; Naganuma M; Kobayashi Y; Hirai Y; Kitagawa A; Miyokawa M; Mishima R; Teramukai S; Fukushima M · Nutrients · 2026
    Randomized trial91 participantsEnergy forVitamin D
  52. The effects of vitamin D supplementation on disease activity and fatigue in Libyan rheumatoid arthritis patients.
    Elfituri S · Reumatologia · 2024
    Randomized trial68 participantsEnergy forVitamin D
  53. The effect of home-based aerobic training and vitamin D supplementation on fatigue and quality of life in patients with multiple sclerosis during COVID-19 outbreak.
    Bahmani E; Hoseini R; Amiri E · Science & sports · 2022
    Randomized trial40 participantsEnergy forVitamin D
  54. 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
  55. 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
  56. 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
  57. 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
  58. 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
  59. Vitamin D supplementation for prevention of mortality in adults.
    Bjelakovic G; Gluud LL; Nikolova D; Whitfield K; Wetterslev J; Simonetti RG; Bjelakovic M; Gluud C · The Cochrane database of systematic reviews · 2014
    Meta-analysis95,286 participants159 studies pooledGeneral Health forVitamin D
  60. The impact of vitamin D administration on mortality in COVID-19 patients: a systematic review and meta-analysis of randomized controlled trials.
    Kow CS; Ramachandram DS; Hasan SS; Wong Z; Thiruchelvam K · Inflammopharmacology · 2024
    Meta-analysis2,495 participants19 studies pooledGeneral Health forVitamin D
  61. Vitamin D Status and Mortality: A Systematic Review of Observational Studies.
    Heath AK; Kim IY; Hodge AM; English DR; Muller DC · International journal of environmental research and public health · 2019
    Systematic review84 studies pooledGeneral Health forVitamin D
  62. Meta-analysis of long-term vitamin D supplementation on overall mortality.
    Zheng Y; Zhu J; Zhou M; Cui L; Yao W; Liu Y · PloS one · 2014
    Meta-analysis42 studies pooledGeneral Health forVitamin D
  63. 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
  64. 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
  65. 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
  66. Vitamin D supplementation for cardiometabolic risk markers in pregnant women based on the gestational diabetes mellitus or obesity status : a randomized clinical trial.
    Yin WJ; Wang P; Ma SS; Tao RX; Hu HL; Jiang XM; Zhang Y; Tao FB; Zhu P · European journal of nutrition · 2024
    Randomized trial1,537 participantsHeart Health forVitamin D
  67. Vitamin D Supplementation, Serum 25(OH)D Concentrations and Cardiovascular Disease Risk Factors: A Systematic Review and Meta-Analysis.
    Mirhosseini N; Rainsbury J; Kimball SM · Frontiers in cardiovascular medicine · 2020
    Meta-analysis81 studies pooledHeart Health forVitamin D
  68. Does vitamin D supplementation modulate metabolic risk factors of cardiovascular disease? A systematic review and meta-analysis of clinical trials.
    Abumweis S; Alqadi S; Al Tarteer A; Alrefai W; Alzoughool F; Jew S; Qudah T · Asia Pacific journal of clinical nutrition · 2026
    Meta-analysis45 studies pooledHeart Health forVitamin D
  69. 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
  70. 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
  71. 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
  72. 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
  73. 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
  74. Vitamin D Alleviates Anxiety and Depression in Elderly People with Prediabetes: A Randomized Controlled Study.
    Zaromytidou E; Koufakis T; Dimakopoulos G; Drivakou D; Konstantinidou S; Rakitzi P; Grammatiki M; Manthou E; Notopoulos A; Iakovou I; Gotzamani-Psarrakou A; Kotsa K · Metabolites · 2023
    Randomized trial90 participantsStress Relief forVitamin D
  75. Effects of an 8-week high-dose vitamin D supplementation on fatigue and neuropsychiatric manifestations in post-COVID syndrome: A randomized controlled trial.
    Charoenporn V; Tungsukruthai P; Teacharushatakit P; Hanvivattanakul S; Sriyakul K; Sukprasert S; Kamalashiran C; Tungsukruthai S; Charernboon T · Psychiatry and clinical neurosciences · 2024
    Randomized trial80 participantsStress Relief forVitamin D
  76. The Influence of Vitamin D Intake and Status on Mental Health in Children: A Systematic Review.
    Głąbska D; Kołota A; Lachowicz K; Skolmowska D; Stachoń M; Guzek D · Nutrients · 2021
    Systematic review24 studies pooledStress Relief forVitamin D
  77. Vitamin D3 enhances mood in healthy subjects during winter.
    Lansdowne AT; Provost SC · Psychopharmacology · 1998
    Randomized trial44 participantsStress Relief forVitamin D
  78. Comparative Effects of Etelcalcetide and Maxacalcitol on Serum Calcification Propensity in Secondary Hyperparathyroidism: A Randomized Clinical Trial.
    Shoji T; Nakatani S; Kabata D; Mori K; Shintani A; Yoshida H; Takahashi K; Ota K; Fujii H; Ueda S; Nishi S; Nakatani T; Yoshiyama M; Goto K; Hamada T; Imanishi M; Ishimura E; Kagitani S; Kato Y; Kumeda Y; Maekawa K; Matsumura T; Nagayama H; Obi Y; Ohno Y; Sai Y; Sakurai M; Sasaki S; Shidara K; Shoji S; Tsujimoto Y; Yamakawa K; Yasuda H; Yodoi S; Inaba M; Emoto M · Clinical journal of the American Society of Nephrology : CJASN · 2021
    Randomized trial326 participantsStress Relief forVitamin D