tnvitamins Osteo-Gest supplement bottle
tnvitamins

Osteo-Gest Review

What We Researched
7 active ingredients analyzed · 5 inactive ingredients decoded · 1 brand certification checked · Last updated: Aug 2026
92
Product Score Excellent
77
Brand Score Fair

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) 800 IU 200%
Vitamin K (as Phytonadione) 180 mcg 225%
Calcium (as MCH-CAL whole Bone powder) 900 mg 90%
Phosphorus (as MCH-CAL whole Bone powder) 352 mg 25%
Magnesium (as Magnesium Citrate, Magnesium Oxide) 500 mg 125%
Manganese (as Manganese Citrate) 10 mg 500%
Boron (as Boron Citrate) 4.5 mg
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 (as Cholecalciferol) Good
  • Vitamin K (as Phytonadione) Fair
  • Calcium (as MCH-CAL whole Bone powder) Good
  • Phosphorus (as MCH-CAL whole Bone powder) Good
  • Magnesium (as Magnesium Citrate, Magnesium Oxide) Good
  • Manganese (as Manganese Citrate) Good
  • Boron (as Boron Citrate) Good
Other Ingredients Excellent

Fillers & Additives

  • Magnesium Stearate
  • Gelatin
  • Silicon Dioxide
  • Rice Flour
  • Silica
Efficacy Very Good

Dosage Analysis

  • Vitamin D3 (as Cholecalciferol) 800 IU Effective
  • Vitamin K (as Phytonadione) 180 mcg Effective
  • Calcium (as MCH-CAL whole Bone powder) 900 mg Effective
  • Phosphorus (as MCH-CAL whole Bone powder) 352 mg Under-dosed
  • Magnesium (as Magnesium Citrate, Magnesium Oxide) 500 mg High
  • Manganese (as Manganese Citrate) 10 mg High
  • Boron (as Boron Citrate) 4.5 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (as Cholecalciferol) 800 IU 200%
Vitamin K (as Phytonadione) 180 mcg 225%
Calcium (as MCH-CAL whole Bone powder) 900 mg 90%
Phosphorus (as MCH-CAL whole Bone powder) 352 mg 25%
Magnesium (as Magnesium Citrate, Magnesium Oxide) 500 mg 125%
Manganese (as Manganese Citrate) 10 mg 500%
Boron (as Boron Citrate) 4.5 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Brand Trust Report
tnvitamins

Founded 1979 · Deer Park, NY, USA · 136 products · tnvitamins.com/

Certifications

1 certification
Consumerlab Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

1 incident
Fda Warning Significant violations of Current Good Manufacturing Practice (CGMP) regulations for dietary supplements.2017-08-16Source
Related Supplements
Frequently Asked Questions
Is tnvitamins Osteo-Gest a good supplement?

tnvitamins Osteo-Gest received a product quality score of 92/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 7 active ingredients with 30 servings per container. All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, tnvitamins, holds a brand trust score of 77/100 with 1 verified certifications including Consumerlab.

What are the ingredients in tnvitamins Osteo-Gest?

tnvitamins Osteo-Gest contains 7 active ingredients: Vitamin D3 (as Cholecalciferol) (800 IU), Vitamin K (as Phytonadione) (180 mcg), Calcium (as MCH-CAL whole Bone powder) (900 mg), Phosphorus (as MCH-CAL whole Bone powder) (352 mg), Magnesium (as Magnesium Citrate, Magnesium Oxide) (500 mg), Manganese (as Manganese Citrate) (10 mg), and 1 more. Notable high-dose ingredients include Vitamin K at 225% DV, Manganese at 500% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is tnvitamins Osteo-Gest safe to take?

tnvitamins Osteo-Gest has been analyzed for ingredient safety across all its components. All 5 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 tnvitamins a trustworthy supplement brand?

tnvitamins receives a brand trust score of 77/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1979 and headquartered in Deer Park, NY, USA, the company offers 136 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: tnvitamins has 1 historical regulatory incident 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.