Mason Natural D3 1000 IU (25 mcg) supplement bottle
Mason Natural

D3 1000 IU (25 mcg)

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 2 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
100
Product Score Excellent
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D3 (as Cholecalciferol, Fish Liver Oil) 25 mcg 125%
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 (as Cholecalciferol, Fish Liver Oil) Good
Other Ingredients Excellent

Fillers & Additives

  • Soybean Oil
  • Gelatin Bovine
  • Glycerin
  • Water
  • Purified
Efficacy Excellent

Dosage Analysis

  • Vitamin D3 (as Cholecalciferol, Fish Liver Oil) 25 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (as Cholecalciferol, Fish Liver Oil) 25 mcg 125%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Soybean Oil Safe

Dissolves fat-soluble ingredients. Contains soy allergen.

Gelatin Bovine Unknown
Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Water Safe

Dissolves and carries water-soluble ingredients.

Purified 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
Mason Natural

Founded 1967 · Miami Lakes, Florida, USA · 161 products · masonvitamins.com

Certifications

2 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

4 incidents
Recall Herbal Colon Cleanser Capsules2025-09-02Source
Recall Healthy Sense Daily Multiple with Iron and People's Choice Women's Daily Vitamins with Iron2022-11-17Source
Prop 65 Lead2017-03-10Source
Prop 65 Lead2016-03-28Source
Related Supplements
Frequently Asked Questions
Is Mason Natural D3 1000 IU (25 mcg) a good supplement?

Mason Natural D3 1000 IU (25 mcg) 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 60 servings per container. Of the 5 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Mason Natural, holds a brand trust score of 66/100 with 2 verified certifications including Consumerlab, Fda Gmp Inspections.

What are the ingredients in Mason Natural D3 1000 IU (25 mcg)?

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

Is Mason Natural D3 1000 IU (25 mcg) safe to take?

Mason Natural D3 1000 IU (25 mcg) 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 Mason Natural a trustworthy supplement brand?

Mason Natural receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1967 and headquartered in Miami Lakes, Florida, USA, the company offers 161 products in their lineup. They hold 2 verified certifications including Consumerlab, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Mason Natural has 4 historical regulatory incidents on record, which are factored into the trust score.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.