Nature's Blend Vitamin D3 25 mcg (1000 IU) supplement bottle
Nature's Blend

Vitamin D3 25 mcg (1000 IU)

What We Researched
1 active ingredient analyzed · 11 inactive ingredients decoded · 2 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
100
Product Score Excellent
75
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D3 (as Cholecalciferol) 25 mcg 125%
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 (as Cholecalciferol) Good
Other Ingredients Excellent

Fillers & Additives

  • Calcium Phosphate
  • Modified Cellulose
  • Starch
  • Acacia Gum
  • Medium Chain Triglyceride
  • Croscarmellose Sodium
  • Magnesium Stearate
  • Silica
  • Triacetin
  • Polydextrose
  • DL-Alpha Tocopherol
Efficacy Excellent

Dosage Analysis

  • Vitamin D3 (as Cholecalciferol) 25 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (as Cholecalciferol) 25 mcg 125%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Calcium Phosphate Generally_safe

It is used as a filler and anticaking agent in supplements.

Modified Cellulose Safe

Creates vegetarian capsule shells with controlled dissolution.

Starch Generally_safe

It is used as a filler, binder, or thickener.

Acacia Gum Safe

Binds tablet ingredients together. Also a source of soluble fiber.

Medium Chain Triglyceride Unknown
Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Triacetin Generally_safe

It is used as a solvent or humectant.

Polydextrose Generally_safe

It is used as a filler, to add bulk, and as a prebiotic fiber.

DL-Alpha Tocopherol Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$13$12$11$10$9 $11.21
Target

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

Brand Trust Report
Nature's Blend

Founded 1974 · Casa Grande, Arizona, USA · 156 products · naturesblendshop.com/

Certifications

2 certifications
Npa Gmp Verified Source
Fda Gmp Inspections Verified Source

Transparency

4 claims
Third Party Testing Claim — Claimed Source
Coa Availability — Verified Source
In House Testing — Verified Source

Violation History

1 incident
Prop 65 Lead2019-02-08Source
Related Supplements
Frequently Asked Questions
Is Nature's Blend Vitamin D3 25 mcg (1000 IU) a good supplement?

Nature's Blend Vitamin D3 25 mcg (1000 IU) received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 100 servings per container. Of the 11 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, Nature's Blend, holds a brand trust score of 75/100 with 2 verified certifications including Npa Gmp, Fda Gmp Inspections.

What are the ingredients in Nature's Blend Vitamin D3 25 mcg (1000 IU)?

Nature's Blend Vitamin D3 25 mcg (1000 IU) contains 1 active ingredients: Vitamin D3 (as Cholecalciferol) (25 mcg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Blend Vitamin D3 25 mcg (1000 IU) safe to take?

Nature's Blend Vitamin D3 25 mcg (1000 IU) 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 Nature's Blend a trustworthy supplement brand?

Nature's Blend receives a brand trust score of 75/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1974 and headquartered in Casa Grande, Arizona, USA, the company offers 156 products in their lineup. They hold 2 verified certifications including Npa Gmp, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nature's Blend has 1 historical regulatory incident 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 250,000 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. 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.