Irwin Naturals Liquid-Gel Multi with Iron supplement bottle
Irwin Naturals

Liquid-Gel Multi with Iron Review

What We Researched
1 active ingredient analyzed · 11 inactive ingredients decoded · 2 brand certifications checked · Last updated: Aug 2026
96
Product Score Excellent
79
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 1,000 IU —
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 Good
Other Ingredients Very Good

Fillers & Additives

  • Gelatin
  • Purified Water
  • Glycerin
  • Caramel (Color)
  • Dicalcium Phosphate
  • Soy Lecithin
  • Soybean Oil
  • Beeswax
  • Mannitol
  • Titanium Dioxide (Color) Medium
  • Maltodextrin
Efficacy Excellent

Dosage Analysis

  • Vitamin D3 1,000 IU Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 1,000 IU

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Caramel (Color) Generally_safe

It is used to add a brown color to the supplement.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Soy Lecithin Safe

Helps blend oil and water-based ingredients. Common allergen.

Soybean Oil Safe

Dissolves fat-soluble ingredients. Contains soy allergen.

Beeswax Safe

Used as a coating and to help form softgel capsules.

Mannitol Generally_safe

It is used as a sweetener, filler, and flow agent.

Titanium Dioxide (Color) Caution

It is used to improve the appearance of the supplement.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Brand Trust Report
Irwin Naturals

Founded 1994 · Los Angeles, California, United States · 130 products · irwinnaturals.com/

Certifications

2 certifications
Nsf Gmp Verified Source
NSF Contents Certified Verified

Transparency

5 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Claimed
Contains Proprietary Blend — True

Violation History

2 incidents
Lawsuit Deceptively marketing products as 'natural' while they contain synthetic ingredients.2021Source
Prop 65 Lead2011-02-02Source
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Frequently Asked Questions
Is Irwin Naturals Liquid-Gel Multi with Iron a good supplement?

Irwin Naturals Liquid-Gel Multi with Iron received a product quality score of 96/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients Of the 11 inactive ingredients, 7 are rated safe and 1 are flagged for review. The manufacturer, Irwin Naturals, holds a brand trust score of 79/100 with 2 verified certifications including Nsf Gmp, NSF Contents Certified.

What are the ingredients in Irwin Naturals Liquid-Gel Multi with Iron?

Irwin Naturals Liquid-Gel Multi with Iron contains 1 active ingredients: Vitamin D3 (1,000 IU). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Irwin Naturals Liquid-Gel Multi with Iron safe to take?

Irwin Naturals Liquid-Gel Multi with Iron has been analyzed for ingredient safety across all its components. Of 11 inactive ingredients, 7 are rated safe. 1 ingredient is flagged for review: Titanium Dioxide (Color). 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Irwin Naturals a trustworthy supplement brand?

Irwin Naturals receives a brand trust score of 79/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1994 and headquartered in Los Angeles, California, United States, the company offers 130 products in their lineup. They hold 2 verified certifications including Nsf Gmp, NSF Contents Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Irwin Naturals has 2 historical regulatory incidents 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.