Best Naturals Vitamin D3 10,000 IU supplement bottle
Best Naturals

Vitamin D3 10,000 IU Review

What We Researched
1 active ingredient analyzed · 4 inactive ingredients decoded · 1 brand certification checked · Page generated: Sep 2026
93
Product Score Excellent
74
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) 250 mcg 1250%
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 (as Cholecalciferol) Good
Other Ingredients Excellent

Fillers & Additives

  • Safflower Oil
  • Gelatin
  • Vegetable Glycerin
  • Sunflower Oil
Efficacy Very Good

Dosage Analysis

  • Vitamin D3 (as Cholecalciferol) 250 mcg High

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (as Cholecalciferol) 250 mcg 1250%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Safflower Oil Safe

It is used as a carrier oil or source of fatty acids.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Vegetable Glycerin Safe

Helps form softgel capsule shells and acts as a humectant.

Sunflower Oil Safe

Helps dissolve and absorb fat-soluble vitamins.

Brand Trust Report
Best Naturals

Founded 2012 · Piscataway, New Jersey, USA · 129 products · shopbestnaturals.com

Certifications

1 certification
Consumerlab Source available Primary evidence

Transparency

4 claims
Third Party Testing Claim — Claimed Evidence available Evidence
In House Testing — Verified Evidence available Evidence
Contains Proprietary Blend — True Brand claim; evidence unavailable

Violation History

2 incidents
Prop 65 Lead and lead compounds2021-12-29 Source available Primary source
Lawsuit Falsely advertising krill oil supplements that allegedly contain no krill.2021 Source available Primary source
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Frequently Asked Questions
Is Best Naturals Vitamin D3 10,000 IU a good supplement?

Best Naturals Vitamin D3 10,000 IU received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 240 servings per container. All 4 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Best Naturals, holds a brand trust score of 74/100.

What are the ingredients in Best Naturals Vitamin D3 10,000 IU?

Best Naturals Vitamin D3 10,000 IU contains 1 active ingredients: Vitamin D3 (as Cholecalciferol) (250 mcg). Notable high-dose ingredients include Vitamin D3 at 1250% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Best Naturals Vitamin D3 10,000 IU safe to take?

GoodSupp reviewed the inactive-ingredient data available for Best Naturals Vitamin D3 10,000 IU. All 4 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Best Naturals a trustworthy supplement brand?

Best Naturals receives a brand trust score of 74/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2012 and headquartered in Piscataway, New Jersey, USA, the company offers 129 products in their lineup. Note: Best Naturals has 2 historical regulatory incidents on record, which are factored into the trust score.

How much vitamin d3 should i take daily?

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 does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 150,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

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.

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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.