BioSchwartz Premium Ultra Pure Bone Strength, Calcium + D3, K2 & Magnesium, 120 Capsules supplement bottle
BioSchwartz

Premium Ultra Pure Bone Strength, Calcium + D3, K2 & Magnesium, 120 Capsules

What We Researched
9 active ingredients analyzed · 1 inactive ingredient decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
90
Product Score Excellent
62
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Calcium Ascorbate and Ascorbyl Palmitate) 90 mg 100%
Vitamin D3 (Cholecalciferol) 50 mcg 250%
Calcium (as Calcium Carbonate, Calcium Citrate, and Calcium Ascorbate) 750 mg 58%
Magnesium (as Magnesium Amino Acid Chelate) 380 mg 90%
Zinc (as Zinc Citrate) 5 mg 45%
Manganese (as Manganese Gluconate) 2 mg 87%
Boron (as Boron Citrate) 3 mg **
Strontium (as Strontium Citrate) 3 mg **
Menaquinone-7 (Vitamin K2) 120 mcg **
Bioavailability Very Good

Absorption Rating

  • Vitamin C (as Calcium Ascorbate and Ascorbyl Palmitate) Fair
  • Vitamin D3 (Cholecalciferol) Good
  • Calcium (as Calcium Carbonate, Calcium Citrate, and Calcium Ascorbate) Fair
  • Magnesium (as Magnesium Amino Acid Chelate) Good
  • Zinc (as Zinc Citrate) Good
  • Manganese (as Manganese Gluconate) Good
  • Boron (as Boron Citrate) Good
  • Strontium (as Strontium Citrate) Good
  • Menaquinone-7 (Vitamin K2) Good
Other Ingredients Excellent

Fillers & Additives

  • Hypromellose (Capsule)
Efficacy Very Good

Dosage Analysis

  • Vitamin C (as Calcium Ascorbate and Ascorbyl Palmitate) 90 mg Effective
  • Vitamin D3 (Cholecalciferol) 50 mcg Effective
  • Calcium (as Calcium Carbonate, Calcium Citrate, and Calcium Ascorbate) 750 mg Effective
  • Magnesium (as Magnesium Amino Acid Chelate) 380 mg High
  • Zinc (as Zinc Citrate) 5 mg Under-dosed
  • Manganese (as Manganese Gluconate) 2 mg Effective
  • Boron (as Boron Citrate) 3 mg Effective
  • Strontium (as Strontium Citrate) 3 mg Under-dosed
  • Menaquinone-7 (Vitamin K2) 120 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as Calcium Ascorbate and Ascorbyl Palmitate) 90 mg 100%
Vitamin D3 (Cholecalciferol) 50 mcg 250%
Calcium (as Calcium Carbonate, Calcium Citrate, and Calcium Ascorbate) 750 mg 58%
Magnesium (as Magnesium Amino Acid Chelate) 380 mg 90%
Zinc (as Zinc Citrate) 5 mg 45%
Manganese (as Manganese Gluconate) 2 mg 87%
Boron (as Boron Citrate) 3 mg **
Strontium (as Strontium Citrate) 3 mg **
Menaquinone-7 (Vitamin K2) 120 mcg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Hypromellose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$21$20$19$18$17 Mar 12 $18.97
iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
BioSchwartz

Founded 2015 · St. Petersburg, FL, USA · 53 products · bioschwartz.com

Certifications

1 certification
Consumerlab Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

2 incidents
Prop 65 Lead2020-08-20Source
Recall Coconut Oil2020-01-21Source
Related Supplements
Frequently Asked Questions
Is BioSchwartz Premium Ultra Pure Bone Strength, Calcium + D3 a good supplement?

BioSchwartz Premium Ultra Pure Bone Strength, Calcium + D3, K2 & Magnesium, 120 Capsules received a product quality score of 90/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 9 active ingredients with 30 servings per container. All 1 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, BioSchwartz, holds a brand trust score of 62/100 with 1 verified certifications including Consumerlab.

What are the ingredients in BioSchwartz Premium Ultra Pure Bone Strength, Calcium + D3?

BioSchwartz Premium Ultra Pure Bone Strength, Calcium + D3 contains 9 active ingredients: Vitamin C (as Calcium Ascorbate and Ascorbyl Palmitate) (90 mg), Vitamin D3 (Cholecalciferol) (50 mcg), Calcium (as Calcium Carbonate, Calcium Citrate, and Calcium Ascorbate) (750 mg), Magnesium (as Magnesium Amino Acid Chelate) (380 mg), Zinc (as Zinc Citrate) (5 mg), Manganese (as Manganese Gluconate) (2 mg), and 3 more. Notable high-dose ingredients include Vitamin D3 at 250% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is BioSchwartz Premium Ultra Pure Bone Strength, Calcium + D3 safe to take?

BioSchwartz Premium Ultra Pure Bone Strength, Calcium + D3, K2 & Magnesium, 120 Capsules has been analyzed for ingredient safety across all its components. All 1 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is BioSchwartz a trustworthy supplement brand?

BioSchwartz receives a brand trust score of 62/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2015 and headquartered in St. Petersburg, FL, USA, the company offers 53 products in their lineup. They hold 1 verified certifications including Consumerlab. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: BioSchwartz has 2 historical regulatory incidents on record, which are factored into the trust score.

What is magnesium good for?

Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.