Superior Source D3 25 mcg (1000 IU) MicroLingual Tablets supplement bottle
Superior Source

D3 25 mcg (1000 IU) MicroLingual Tablets Review

What We Researched
1 active ingredient analyzed · 2 inactive ingredients decoded · 2 brand certifications checked · Page generated: Sep 2026
100
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 D (as Cholecalciferol) (1,000 IU) 25 mcg 125%
Bioavailability Excellent

Absorption Rating

  • Vitamin D (as Cholecalciferol) (1,000 IU) Good
Other Ingredients Excellent

Fillers & Additives

  • Lactose
  • Gum Acacia
Efficacy Excellent

Dosage Analysis

  • Vitamin D (as Cholecalciferol) (1,000 IU) 25 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D (as Cholecalciferol) (1,000 IU) 25 mcg 125%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Lactose Generally_safe

It is used as a filler or binder.

Gum Acacia Safe

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

Brand Trust Report
Superior Source

Founded 1969 · Los Angeles, California, United States · 74 products · superiorsourcevitamins.com/

Certifications

2 certifications
Consumerlab Source available Primary evidence
NSF Certified Supporting evidence unavailable

Transparency

2 claims
Third Party Testing Claim — Claimed Brand claim; evidence unavailable
In House Testing — Verified Evidence available Evidence
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Frequently Asked Questions
Is Superior Source D3 25 mcg (1000 IU) MicroLingual Tablets a good supplement?

Superior Source D3 25 mcg (1000 IU) MicroLingual Tablets 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. All 2 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Superior Source, holds a brand trust score of 77/100.

What are the ingredients in Superior Source D3 25 mcg (1000 IU) MicroLingual Tablets?

Superior Source D3 25 mcg (1000 IU) MicroLingual Tablets contains 1 active ingredients: Vitamin D (as Cholecalciferol) (1,000 IU) (25 mcg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Superior Source D3 25 mcg (1000 IU) MicroLingual Tablets safe to take?

GoodSupp reviewed the inactive-ingredient data available for Superior Source D3 25 mcg (1000 IU) MicroLingual Tablets. All 2 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 Superior Source a trustworthy supplement brand?

Superior Source receives a brand trust score of 77/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1969 and headquartered in Los Angeles, California, United States, the company offers 74 products in their lineup.

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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.