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Vegan Plant-Based Calcium 1000 mg

PlantFusion
4.7
★ ★ ★ ★ ★
(225 ratings)
Calcium 1000 mg
Vitamin K 85 mcg
Vanadium 26 mcg
Silicon 3 mg
Product Image
Score70
Algae-derived calcium, lichen vitamin D3, and menaquinone-7 provide a vegan bone-support core. The large calcium serving may absorb better when divided, magnesium is modest, and the broad algae blend obscures its individual contribution.
How scoring works
Quantity:90 Tablet(s) • (30 servings)
Goals:
Bone Health

Score 70

Algae-derived calcium, lichen vitamin D3, and menaquinone-7 provide a vegan bone-support core. The large calcium serving may absorb better when divided, magnesium is modest, and the broad algae blend obscures its individual contribution.
How scoring works
$27.58($0.91 per serving)
Vitacost
$ 29.99
iHerb
$ 27.58
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Analysis

Algae-derived calcium, lichen vitamin D3, and menaquinone-7 provide a vegan bone-support core. The large calcium serving may absorb better when divided, magnesium is modest, and the broad algae blend obscures its individual contribution.

Algae-sourced Aquamin provides a premium calcium form with clear elemental disclosure. The full serving supplies more calcium than the body typically absorbs efficiently at one time, so dividing the three tablets may be more practical.

Algae-sourced calcium with vitamin D3 and MK-7 covers mineral supply, absorption, and calcium placement. Magnesium and trace minerals add supporting breadth, although their amounts are modest.

Who is it for
  • Adults focused on bone health
Best for
  • Calcium supplementation
  • Vitamin K supplementation
  • Vanadium supplementation

Pros

  • Provides a disclosed 1000.00mg of calcium
  • Provides a disclosed 20.00mcg of vitamin d3
  • Provides a disclosed 85.00mcg of vitamin k2

Cons

  • The large calcium serving may absorb better when divided
  • Magnesium is modest
  • The algae blend hides individual contributions

Warnings

  • Vitamin K can oppose warfarin and related medicines, so intake should remain consistent and medically coordinated.
  • Large supplemental calcium servings may be unsuitable with high blood calcium or a history of calcium kidney stones.
  • Calcium can reduce absorption of thyroid medicine and some antibiotics unless doses are separated.

Nutrient quality

77 High impact

Lichen vitamin D3, MK-7, and algae-derived Aquamin provide strong plant-based forms. Calcium is substantial, while magnesium, silicon, boron, and vanadium are modest.

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Ingredient transparency

73 High impact

Most main amounts are shown, but some blend allocations remain unclear. The supplied data does not include a complete inactive ingredient list.

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Customer satisfaction

66 High impact

The aggregate satisfaction measure is supported by adequate volume. Missing feedback themes leave recurring complaints and purpose fit uncertain.

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Value for money

59 Moderate impact

The price is only partly justified by the formula quality and dose. Each serving is costly relative to its effective value.

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Report analysis

Goals

Bone Health
Bone Health
Impact
Highest effect
A Goal FitA- Strength of SupportB+ CoverageA- Formula Quality
Vitamin K · 85 mcgMagnesium · 96 mgCalcium · 1000 mgVitamin D · 20 mcgBoron · 93 mcg

Algae-sourced calcium with vitamin D3 and MK-7 covers mineral supply, absorption, and calcium placement. Magnesium and trace minerals add supporting breadth, although their amounts are modest.

The full calcium amount is large for one sitting and may be better divided across the day. People using warfarin or another vitamin K antagonist need clinician-guided consistency because MK-7 can change anticoagulant control.

Study evidence
Calcium Supportive 144 studies
Magnesium Supportive 48 studies
Vitamin D Supportive 202 studies
Vitamin K Supportive 78 studies

Ingredients

IngredientAmount per serving
Vitamin D3 (Lichen)
 20 mcg
Vitamin K2 (Menaquinone-7)
 85 mcg
Calcium (Aquamin)
 1000 mg
Magnesium (Aquamin)
 96 mg
Strontium (Aquamin)
 7 mg
Silica (Aquamin)
 3 mg
Boron (Aquamin)
 93 mcg
Vanadium (Aquamin)
 26 mcg
Organic Vegan & Red Algae Blend
3535 mg
Gluten Free Adults 18–50 Vegan Dairy Free Sugar Free Vegetarian
Report overview
Calcium (Aquamin) · 1000 mg OverallScore70
A+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyF Value

Algae-sourced Aquamin provides a premium calcium form with clear elemental disclosure. The full serving supplies more calcium than the body typically absorbs efficiently at one time, so dividing the three tablets may be more practical. Vitamin K2 can oppose vitamin K antagonist medicines such as warfarin, and the high serving cost limits value despite useful cofactors.

View ingredientView products
Vitamin K (Menaquinone-7) · 85 mcg OverallScore64
C+ Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyF Value

Generic MK-7 provides a maintenance K2 amount, but the dry tablet lacks a fat-based delivery system. Vitamin D3 adds useful bone-support synergy, though the serving cost is high for an MK-7 amount below the clinical target. Vitamin K can counteract warfarin and related vitamin K antagonist therapy, so users of those medicines need clinician-guided consistency.

View ingredientView products
Vanadium (Aquamin) · 26 mcg OverallScore45
F Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyD+ Value

The 26 mcg vanadium amount is clearly disclosed and sits within a useful supplemental range near the collection median. Aquamin identifies the broader mineral source but not the specific chemical form of vanadium, so its absorption potential remains uncertain. The per-serving cost is average for the collection, and three tablets are required for each serving.

View ingredientView products
Loading alternative details
82 Performance

Ultra BoneUp

Jarrow Formulas
<p>A moderate hydroxyapatite calcium amount is joined by vitamin D3, MK-7, magnesium, boron, silicon, and type II collagen. The formula covers more bone pathways and avoids the original’s 1,000 mg single-serving calcium load, although magnesium oxide lowers mineral quality.</p>
76 Performance

Bone Strength

NATURELO Premium Supplements
<p>A more balanced 600 mg calcium and 200 mg magnesium serving is supported by vitamin D3, MK-7, zinc, boron, and vitamin C. Aquamin magnesium is not fully characterized, but the overall mineral balance is more practical than the calcium-heavy original.</p>
78 Performance

Cal/Mag/Vit D3 with Vitamin K2

NaturesPlus
<p>Amino acid chelates provide substantial calcium and magnesium alongside vitamin D3 and vitamin K2. The amounts are very high and the MK-4 dose is modest for that short-acting form, yet magnesium support is considerably deeper than in the original.</p>
81 Budget

Bone Restore with Vitamin K2

Life Extension
<p>Chelated and malate calcium, vitamin D3, 200 mcg of MK-7, and 3 mg of boron provide broader bone support at a lower serving cost. Magnesium oxide is the main form limitation, and vitamin K requires caution with warfarin-type medicines.</p>
79 Budget

Cal-Mag Citrate with Vitamin D-3 & K-2 2:1 Ratio

Solaray
<p>Calcium and magnesium citrate are paired with vitamin D3 and MK-7 at a lower serving cost. The large mineral load and some magnesium oxide remain drawbacks, but magnesium depth is much stronger than in the original.</p>
75 Budget

Stronger Bones

Garden of Life Dr. Formulated
<p>Calcium, vitamin D, vitamin K1, and MK-7 create a simpler lower-cost bone formula. Calcium is still excessive for one sitting, K2 is modest, and the eggshell source is unsuitable for people with egg allergy.</p>
70 Value

Organic Plant Calcium

Garden of Life MyKind Organics
<p>Organic algae calcium, vitamin D, and MK-7 preserve the plant-oriented design while providing a longer supply and somewhat better value. Magnesium remains light and the large plant blend is not broken down enough to judge.</p>
76 Value

Cal/Mag/Vit D3 with Vitamin K2

NaturesPlus
<p>Chelated calcium and magnesium with vitamin D3 provide broad mineral support at favorable serving economics. The very large mineral amounts and modest MK-4 dose keep it from being an ideal daily balance.</p>
67 Value

Multi Basics 3

AOR Advanced Orthomolecular Research Premium
<p>MK-4, MK-7, vitamin D3, silicon, and well-formed trace minerals provide economical support for bone cofactors. Calcium and magnesium are too low to replace the original as a main mineral supplement, so it fits better when dietary calcium is already adequate.</p>
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Sources

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

  1. Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women.
    Knapen MH; Drummen NE; Smit E; Vermeer C; Theuwissen E · 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 trial244 participantsBone Health forVitamin K
  2. Vitamin K supplementation in postmenopausal women with osteopenia (ECKO trial): a randomized controlled trial.
    Cheung AM; Tile L; Lee Y; Tomlinson G; Hawker G; Scher J; Hu H; Vieth R; Thompson L; Jamal S; Josse R · PLoS medicine · 2009
    Randomized trial440 participantsBone Health forVitamin K
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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
  21. Vitamin K and the prevention of fractures: systematic review and meta-analysis of randomized controlled trials.
    Cockayne S; Adamson J; Lanham-New S; Shearer MJ; Gilbody S; Torgerson DJ · Archives of internal medicine · 2006
    Meta-analysis13 studies pooledBone Health forVitamin K
  22. Effect of combined administration of vitamin D3 and vitamin K2 on bone mineral density of the lumbar spine in postmenopausal women with osteoporosis.
    Iwamoto J; Takeda T; Ichimura S · Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association · 2001
    Randomized trial92 participantsBone Health forVitamin K
  23. Efficacy and safety of vitamin K2 for postmenopausal women with osteoporosis at a long-term follow-up: meta-analysis and systematic review.
    Zhou M; Han S; Zhang W; Wu D · Journal of bone and mineral metabolism · 2022
    Meta-analysis6,853 participants9 studies pooledBone Health forVitamin K
  24. Low-dose vitamin K2 (MK-4) supplementation for 12 months improves bone metabolism and prevents forearm bone loss in postmenopausal Japanese women.
    Koitaya N; Sekiguchi M; Tousen Y; Nishide Y; Morita A; Yamauchi J; Gando Y; Miyachi M; Aoki M; Komatsu M; Watanabe F; Morishita K; Ishimi Y · Journal of bone and mineral metabolism · 2015
    Randomized trial48 participantsBone Health forVitamin K