Onnit Stron Bone supplement bottle
Onnit

Stron Bone Review

What We Researched
10 active ingredients analyzed · 4 inactive ingredients decoded · 6 brand certifications checked · Last updated: Aug 2026
94
Product Score Excellent
99
Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D3 (as Cholecalciferol) 400 IU 100%
Vitamin E 100 IU 333%
Vitamin K2 (as Menatetrenone) 90 mcg 113%
Magnesium 350 mg 88%
Copper (as Copper Citrate) 2 mg 100%
Manganese (as Manganese Citrate) 2 mg 100%
Potassium 80 mg 2%
Strontium (as Strontium Citrate) 680 mg
Onnit Active Blend 410 mg
BioPerine Black Pepper (fruit) extract 5 mg
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 (as Cholecalciferol) Good
  • Vitamin E Good
  • Vitamin K2 (as Menatetrenone) Good
  • Magnesium Good
  • Copper (as Copper Citrate) Good
  • Manganese (as Manganese Citrate) Good
  • Potassium Good
  • Strontium (as Strontium Citrate) Good
  • BioPerine Black Pepper (fruit) extract Good
Other Ingredients Excellent

Fillers & Additives

  • Dicalcium Phosphate
  • Pregelatinized Starch
  • Croscarmellose Sodium
  • Silica
Efficacy Very Good

Dosage Analysis

  • Vitamin D3 (as Cholecalciferol) 400 IU Under-dosed
  • Vitamin E 100 IU Effective
  • Vitamin K2 (as Menatetrenone) 90 mcg Effective
  • Magnesium 350 mg Effective
  • Copper (as Copper Citrate) 2 mg Effective
  • Manganese (as Manganese Citrate) 2 mg Effective
  • Potassium 80 mg Under-dosed
  • Strontium (as Strontium Citrate) 680 mg Effective
  • BioPerine Black Pepper (fruit) extract 5 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (as Cholecalciferol) 400 IU 100%
Vitamin E 100 IU 333%
Vitamin K2 (as Menatetrenone) 90 mcg 113%
Magnesium 350 mg 88%
Copper (as Copper Citrate) 2 mg 100%
Manganese (as Manganese Citrate) 2 mg 100%
Potassium 80 mg 2%
Strontium (as Strontium Citrate) 680 mg
Onnit Active Blend 410 mg
BioPerine Black Pepper (fruit) extract 5 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Pregelatinized Starch Unknown
Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Brand Trust Report
Onnit

Founded 2010 · Austin, Texas, United States · 70 products · onnit.com

Certifications

6 certifications
Consumerlab Verified Source
Informed Sport Verified Source
Fda Gmp Inspections Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source
NSF Certified Verified

Transparency

5 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source
Testing Lab Disclosure — True
Contains Proprietary Blend — True

Violation History

2 incidents
Lawsuit False, misleading and deceptive advertising regarding the efficacy of Alpha BRAIN supplement.2024Source
Lawsuit False, misleading and deceptive advertising regarding the efficacy of Alpha BRAIN.2024Source
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Frequently Asked Questions
Is Onnit Stron Bone a good supplement?

Onnit Stron Bone received a product quality score of 94/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 10 active ingredients with 30 servings per container. Of the 4 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Onnit, holds a brand trust score of 99/100 with 6 verified certifications including Consumerlab, Informed Sport, Fda Gmp Inspections, Nsf Gmp.

What are the ingredients in Onnit Stron Bone?

Onnit Stron Bone contains 10 active ingredients: Vitamin D3 (as Cholecalciferol) (400 IU), Vitamin E (100 IU), Vitamin K2 (as Menatetrenone) (90 mcg), Magnesium (350 mg), Copper (as Copper Citrate) (2 mg), Manganese (as Manganese Citrate) (2 mg), and 4 more. Notable high-dose ingredients include Vitamin E at 333% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Onnit Stron Bone safe to take?

Onnit Stron Bone has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Onnit a trustworthy supplement brand?

Onnit receives a brand trust score of 99/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2010 and headquartered in Austin, Texas, United States, the company offers 70 products in their lineup. They hold 6 verified certifications including Consumerlab, Informed Sport, Fda Gmp Inspections, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Onnit has 2 historical regulatory incidents on record, which are factored into the trust score.

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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 — read our methodology. 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.