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Cal-Mag Citrate 1:1 ratio

Solaray
4.7
★ ★ ★ ★ ★
(1322 ratings)
Calcium 1000 mg
Magnesium 1000 mg
Protein 1 Gram(s)
Product Image
Score73
Substantial 1:1 calcium-magnesium coverage with some citrate forms, but six capsules, oxide content, and ambiguous totals reduce practicality.
How scoring works
Quantity:180 VegCap(s) • (30 servings)
Goals:
Testosterone Support
Bone Health
Energy

Score 73

Substantial 1:1 calcium-magnesium coverage with some citrate forms, but six capsules, oxide content, and ambiguous totals reduce practicality.
How scoring works
$23.60($0.78 per serving)
iHerb
$ 23.69
Walmart
$ 23.60
Vitacost
$ 23.69
Amazon
$ 23.60
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Analysis

Calcium citrate and magnesium citrate provide absorbable forms, while the equal-ratio design may suit users who need both minerals. The formula is directly relevant to bone, muscle, and general mineral support.

Calcium hydroxide, magnesium oxide, and repeated 1,000 mg entries make the actual elemental totals difficult to interpret from the supplied data. Oxide is less absorbable and more likely to cause digestive effects than citrate or bisglycinate.

Six capsules per serving are cumbersome, and the current label should be checked before combining with other mineral products. It fits users with a confirmed need for both calcium and magnesium more than those seeking targeted heart, digestive, or testosterone support.

Who is it for
  • Adults needing both calcium and magnesium
  • Users who prefer a 1:1 mineral ratio
  • People willing to verify elemental totals
Best for
  • Bone-mineral support
  • Calcium and magnesium intake
  • General mineral supplementation

Pros

  • Includes calcium and magnesium citrate
  • Equal-ratio design
  • Substantial stated mineral amounts
  • Iron-free formula

Cons

  • Six capsules per serving
  • Includes magnesium oxide
  • Elemental totals appear ambiguous
  • Not targeted to many listed goals

Warnings

  • Verify elemental calcium and magnesium totals because the supplied entries may represent combined forms rather than additive amounts
  • High magnesium intake may cause diarrhea or abdominal cramping
  • Calcium and magnesium can reduce absorption of thyroid medicine and some antibiotics when taken too close together

Nutrient quality

70 High impact

Calcium and magnesium fit bone and general mineral support, with citrate forms improving the blend. The listed amounts appear unusually high, and oxide or hydroxide forms weaken absorption and tolerance confidence.

Ingredient transparency

75 High impact

The mineral forms and amounts are named, and no proprietary blend is shown. Ambiguous form totals, daily-use directions, and inactive capsule ingredients limit full clarity.

Customer satisfaction

71 High impact

The aggregate rating is strong and supported by a meaningful review count. No specific review comments were supplied, so repeated complaints and purpose-related experiences cannot be verified.

Value for money

76 High impact

A focused two-mineral formula and practical recurring cost offer fair value. Unusually high listed amounts and weaker oxide or hydroxide forms reduce its competitiveness.

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Goals

Testosterone Support
Impact
High effect
B Goal FitC+ Strength of SupportD+ CoverageA- Formula Quality
Magnesium · 1000 mg

Magnesium provides a relevant route to testosterone support. Dose or form uncertainty limits confidence in the practical contribution.

The formula remains narrow rather than comprehensive. The large magnesium amount may cause diarrhea, cramping, and fluid loss, especially because an oxide form is present.

Study evidence
Magnesium Disputed 5 studies
Bone Health
Impact
High effect
A- Goal FitD+ Strength of SupportC- CoverageC+ Formula Quality
Magnesium · 1000 mgCalcium · 1000 mg

Calcium and magnesium provide the main structural mineral support needed for bone, and the even ratio gives both nutrients substantial emphasis. Citrate forms improve part of the absorption profile, while magnesium also supports vitamin D activity.

Vitamin D, vitamin K, and a meaningful protein-matrix ingredient are absent, so the formula does not fully manage mineral absorption and placement. The listed magnesium amount is very high and may cause diarrhea or abdominal cramping, while calcium may cause constipation in sensitive users.

Study evidence
Calcium Supportive 144 studies
Magnesium Supportive 48 studies
Energy
Impact
High effect
B- Goal FitC Strength of SupportC- CoverageB- Formula Quality
Magnesium · 1000 mg

Magnesium supports ATP-dependent metabolism, while calcium mainly serves muscle and skeletal functions. The magnesium amount is substantial, but oxide lowers absorption quality and the calcium-heavy design is not a direct energy formula.

The very large 1,000 mg supplemental magnesium amount, partly from oxide, can cause pronounced diarrhea and abdominal cramping. The substantial calcium amount may also cause constipation in sensitive users.

Study evidence
Magnesium Supportive 4 studies
General Health
Impact
Moderate effect
A Goal FitD- Strength of SupportC- CoverageC Formula Quality
Magnesium · 1000 mg

Calcium and magnesium provide foundational support for bone, muscle, and nerve function in an even ratio. Citrate forms offer some absorption advantage.

The listed magnesium amount is far above the adult supplemental upper limit and may cause diarrhea or cramping. Oxide and hydroxide forms also lower absorption quality despite the substantial serving.

Study evidence
Magnesium Supportive 114 studies
Heart Health
Impact
Moderate effect
B Goal FitD+ Strength of SupportD CoverageC Formula Quality
Magnesium · 1000 mg

Magnesium provides the clearest heart-relevant contribution through vascular tone and normal electrical signaling. Calcium adds muscle and electrical-signaling support but is not a broad cardiovascular active.

The 1,000 mg magnesium amount is substantial, but the oxide portion lowers expected absorption and the calcium-heavy design limits cardiovascular focus. The very large magnesium serving may cause pronounced diarrhea and abdominal cramping, while the high calcium amount may cause constipation.

Study evidence
Magnesium Supportive 158 studies
Stress Relief
Impact
Moderate effect
C+ Goal FitD- Strength of SupportD- CoverageD+ Formula Quality
Magnesium · 1000 mg

Magnesium supports nerve balance, but the 1,000 mg serving is excessive for routine stress support. Citrate improves absorption, while oxide and an equally high calcium amount make the blend difficult to use well.

The large six-capsule mineral load offers no adaptogen or calming amino acid. The magnesium amount may cause diarrhea or abdominal cramping and is not a cautious daily serving.

Study evidence
Magnesium Supportive 13 studies

Ingredients

IngredientAmount per serving
Protein
1 Gram(s)
Calcium (Calcium Citrate, Calcium Hydroxide)
1000 mg
Magnesium (Magnesium Citrate, Magnesium Oxide)
1000 mg
Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
B Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyF Value

Calcium citrate provides a useful base, but calcium hydroxide makes absorption quality mixed. The 1000 mg serving is larger than the amount usually absorbed most efficiently at once, so dividing it may improve use. The high cost weakens value despite the citrate component.

F Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyF Value

Moderately absorbed citrate is diluted by low-absorption magnesium oxide with no form-specific weights. The 1000 mg elemental dose greatly exceeds the standard range and raises gastrointestinal distress risk. Value is poor because an oxide-containing blend costs well above the collection median.

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Sources

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

  1. The association between circulating magnesium and clinically relevant outcomes in patients with chronic kidney disease: A systematic review and meta-analysis.
    Leenders NHJ; Vermeulen EA; van Ballegooijen AJ; Hoekstra T; de Vries R; Beulens JW; Vervloet MG · Clinical nutrition (Edinburgh, Scotland) · 2021
    Meta-analysis348,059 participants33 studies pooledGeneral Health forMagnesium
  2. 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
  3. Magnesium status and magnesium therapy in critically ill patients: A systematic review.
    Fairley J; Glassford NJ; Zhang L; Bellomo R · Journal of critical care · 2016
    Systematic review34 studies pooledGeneral Health forMagnesium
  4. 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 pooledHeart Health forMagnesium
  5. Effects of Magnesium Citrate, Magnesium Oxide, and Magnesium Sulfate Supplementation on Arterial Stiffness: A Randomized, Double-Blind, Placebo-Controlled Intervention Trial.
    Schutten JC; Joris PJ; Groendijk I; Eelderink C; Groothof D; van der Veen Y; Westerhuis R; Goorman F; Danel RM; de Borst MH; Bakker SJL · Journal of the American Heart Association · 2022
    Randomized trial164 participantsHeart Health forMagnesium
  6. Low serum magnesium and cardiovascular mortality in chronic heart failure: a propensity-matched study.
    Adamopoulos C; Pitt B; Sui X; Love TE; Zannad F; Ahmed A · International journal of cardiology · 2009
    Cohort study1,569 participantsHeart Health forMagnesium
  7. 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
  8. 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
  9. 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
  10. 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
  11. Magnesium intake, bone mineral density, and fractures: results from the Women's Health Initiative Observational Study.
    Orchard TS; Larson JC; Alghothani N; Bout-Tabaku S; Cauley JA; Chen Z; LaCroix AZ; Wactawski-Wende J; Jackson RD · The American journal of clinical nutrition · 2014
    Cohort study73,684 participantsBone Health forMagnesium
  12. Dialysate Magnesium and Coronary Artery Calcification, Bone Mineral Density, and Cramping in Maintenance Hemodialysis: A Quasi-experimental Study.
    Srisuwarn P; Sethakarun S; Nongnuch A; Jongjirasiri S; Sritara C; Klyprayong P; Disthabanchong S · Kidney medicine · 2022
    Non-randomized trial40 participantsBone Health forMagnesium
  13. The effect of food, vitamin, or mineral supplements on chronic constipation in adults: A systematic review and meta-analysis of randomized controlled trials.
    van der Schoot A; Creedon A; Whelan K; Dimidi E · Neurogastroenterology and motility · 2023
    Meta-analysis787 participants8 studies pooledDigestive Health forMagnesium
  14. Diagnosis of magnesium-induced diarrhea.
    Fine KD; Santa Ana CA; Fordtran JS · The New England journal of medicine · 1991
    Clinical trial19 participantsDigestive Health forMagnesium
  15. Effect of the laxative magnesium oxide on gastrointestinal functional recovery in fast-track colonic resection: a double-blind, placebo-controlled randomized study.
    Andersen J; Christensen H; Pachler JH; Hallin M; Thaysen HV; Kehlet H · Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2012
    Randomized trial49 participantsDigestive Health forMagnesium
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. 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
  22. 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
  23. 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
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. 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
  30. Red blood cell magnesium and chronic fatigue syndrome.
    Cox IM; Campbell MJ; Dowson D · Lancet (London, England) · 1991
    Randomized trial32 participantsEnergy forMagnesium
  31. Exercise, magnesium and immune function.
    Laires MJ; Monteiro C · Magnesium research · 2008
    Narrative reviewEnergy forMagnesium
  32. 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
  33. 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
  34. 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
  35. 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
  36. 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
  37. 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
  38. 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
  39. 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-analysisHeart Health forMagnesium
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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
  45. 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
  46. 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