Irwin Naturals Only One, Liquid-Gel Multi with Iron, 60 Liquid Soft-Gels supplement bottle
Irwin Naturals

Only One, Liquid-Gel Multi with Iron, 60 Liquid Soft-Gels

What We Researched
29 active ingredients analyzed · 11 inactive ingredients decoded · 1 brand certification checked · 3 retailers compared · Last updated: Mar 2026
87
Product Score Good
78
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 1 g <1%**
Vitamin A (as Beta Carotene) 1,500 mcg 167%
Vitamin C (as Ascorbic Acid) 250 mg 278%
Vitamin D3 (as Cholecalciferol) (1,000 IU) 25 mcg 125%
Vitamin E (as d-Alpha Tocopherol) 20 mg 134%
Thiamin (as Thiamine Hydrochloride) 20 mg 1,667%
Riboflavin 20 mg 1,538%
Niacin (as Niacinamide) 20 mg 125%
Vitamin B6 (as Pyridoxine Hydrochloride) 20 mg 1,176%
Folate (400 mcg folic acid) 680 mcg DFE 170%
Vitamin B12 (as Methylcobalamin) 50 mcg 2,083%
Biotin 500 mcg 1,667%
Pantothenic Acid (as d-Calcium Pantothenate) 20 mg 400%
Calcium 30 mg 2%
Iron (as Iron Amino Acid Chelate) 18 mg 100%
Magnesium (as Magnesium Oxide) 10 mg 2%
Zinc (as Zinc Oxide) 15 mg 136%
Selenium (as L-Selenomethionine) 70 mcg 127%
Copper (as Copper Citrate) 2 mg 222%
Manganese (as Manganese Citrate) 2 mg 87%
Chromium (as Chromium Picolinate) 120 mcg 343%
Molybdenum (as Molybdenum Citrate) 75 mcg 167%
Fish Oil (30% Omega 3 fatty acids, 150 mg) 500 mg
Green Super Food BlendAlfalfa powder (aerial), broccoli powder (aerial), chlorella (Chlorella pyrenoidosa) powder, Kale (Brassica sp.) powder (leaf), Spirulina powder (whole plant) 25 mg
Bioperine ComplexBioPerine® Black Pepper extract (95% piperine) (fruit), Ginger extract (5% gingerols)(rhizome) 6 mg
Bioavailability Very Good

Absorption Rating

  • Total Carbohydrates Fair
  • Vitamin A (as Beta Carotene) Fair
  • Vitamin C (as Ascorbic Acid) Fair
  • Vitamin D3 (as Cholecalciferol) (1,000 IU) Good
  • Vitamin E (as d-Alpha Tocopherol) Good
  • Thiamin (as Thiamine Hydrochloride) Fair
  • Riboflavin Good
  • Niacin (as Niacinamide) Good
  • Vitamin B6 (as Pyridoxine Hydrochloride) Fair
  • Folate (400 mcg folic acid) Fair
  • Vitamin B12 (as Methylcobalamin) Good
  • Biotin Good
  • Pantothenic Acid (as d-Calcium Pantothenate) Good
  • Calcium Good
  • Iron (as Iron Amino Acid Chelate) Fair
  • Magnesium (as Magnesium Oxide) Poor
  • Zinc (as Zinc Oxide) Poor
  • Selenium (as L-Selenomethionine) Good
  • Copper (as Copper Citrate) Good
  • Manganese (as Manganese Citrate) Good
  • Chromium (as Chromium Picolinate) Good
  • Molybdenum (as Molybdenum Citrate) Good
  • Fish Oil (30% Omega 3 fatty acids, 150 mg) Good
  • Green Super Food BlendAlfalfa powder (aerial), broccoli powder (aerial), chlorella (Chlorella pyrenoidosa) powder, Kale (Brassica sp.) powder (leaf), Spirulina powder (whole plant) Fair
  • Bioperine ComplexBioPerine® Black Pepper extract (95% piperine) (fruit), Ginger extract (5% gingerols)(rhizome) 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 Very Good

Dosage Analysis

  • Vitamin A (as Beta Carotene) 1,500 mcg Effective
  • Vitamin C (as Ascorbic Acid) 250 mg Effective
  • Vitamin D3 (as Cholecalciferol) (1,000 IU) 25 mcg Effective
  • Vitamin E (as d-Alpha Tocopherol) 20 mg Effective
  • Thiamin (as Thiamine Hydrochloride) 20 mg Effective
  • Riboflavin 20 mg Effective
  • Niacin (as Niacinamide) 20 mg Effective
  • Vitamin B6 (as Pyridoxine Hydrochloride) 20 mg Effective
  • Folate (400 mcg folic acid) 680 mcg DFE Effective
  • Vitamin B12 (as Methylcobalamin) 50 mcg Effective
  • Biotin 500 mcg Effective
  • Pantothenic Acid (as d-Calcium Pantothenate) 20 mg Effective
  • Calcium 30 mg Under-dosed
  • Iron (as Iron Amino Acid Chelate) 18 mg Effective
  • Magnesium (as Magnesium Oxide) 10 mg Under-dosed
  • Zinc (as Zinc Oxide) 15 mg Effective
  • Selenium (as L-Selenomethionine) 70 mcg Effective
  • Copper (as Copper Citrate) 2 mg Effective
  • Manganese (as Manganese Citrate) 2 mg Effective
  • Chromium (as Chromium Picolinate) 120 mcg Effective
  • Molybdenum (as Molybdenum Citrate) 75 mcg Effective
  • Fish Oil (30% Omega 3 fatty acids, 150 mg) 500 mg Effective
  • Green Super Food BlendAlfalfa powder (aerial), broccoli powder (aerial), chlorella (Chlorella pyrenoidosa) powder, Kale (Brassica sp.) powder (leaf), Spirulina powder (whole plant) 25 mg Under-dosed
  • Bioperine ComplexBioPerine® Black Pepper extract (95% piperine) (fruit), Ginger extract (5% gingerols)(rhizome) 6 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Total Fat 0.5 g <1%**
Cholesterol 5 mg 1%
Total Carbohydrates 1 g <1%**
Protein 1 g
Vitamin A (as Beta Carotene) 1,500 mcg 167%
Vitamin C (as Ascorbic Acid) 250 mg 278%
Vitamin D3 (as Cholecalciferol) (1,000 IU) 25 mcg 125%
Vitamin E (as d-Alpha Tocopherol) 20 mg 134%
Thiamin (as Thiamine Hydrochloride) 20 mg 1,667%
Riboflavin 20 mg 1,538%
Niacin (as Niacinamide) 20 mg 125%
Vitamin B6 (as Pyridoxine Hydrochloride) 20 mg 1,176%
Folate (400 mcg folic acid) 680 mcg DFE 170%
Vitamin B12 (as Methylcobalamin) 50 mcg 2,083%
Biotin 500 mcg 1,667%
Pantothenic Acid (as d-Calcium Pantothenate) 20 mg 400%
Calcium 30 mg 2%
Iron (as Iron Amino Acid Chelate) 18 mg 100%
Magnesium (as Magnesium Oxide) 10 mg 2%
Zinc (as Zinc Oxide) 15 mg 136%
Selenium (as L-Selenomethionine) 70 mcg 127%
Copper (as Copper Citrate) 2 mg 222%
Manganese (as Manganese Citrate) 2 mg 87%
Chromium (as Chromium Picolinate) 120 mcg 343%
Molybdenum (as Molybdenum Citrate) 75 mcg 167%
Fish Oil (30% Omega 3 fatty acids, 150 mg) 500 mg
Green Super Food BlendAlfalfa powder (aerial), broccoli powder (aerial), chlorella (Chlorella pyrenoidosa) powder, Kale (Brassica sp.) powder (leaf), Spirulina powder (whole plant) 25 mg
Bioperine ComplexBioPerine® Black Pepper extract (95% piperine) (fruit), Ginger extract (5% gingerols)(rhizome) 6 mg

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.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$27$25$23$22$20 Mar 12 $25.00$21.99
iHerb
Vitacost

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

Brand Trust Report
Irwin Naturals

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

Certifications

1 certification
Nsf Gmp Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Verified Source
Testing Lab Disclosure — Claimed

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 Only One, Liquid-Gel Multi with Iron a good supplement?

Irwin Naturals Only One, Liquid-Gel Multi with Iron, 60 Liquid Soft-Gels received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 29 active ingredients with 60 servings per container. 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 78/100 with 1 verified certifications including Nsf Gmp.

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

Irwin Naturals Only One, Liquid-Gel Multi with Iron contains 29 active ingredients: Calories (10), Total Fat (0.5 g), Cholesterol (5 mg), Total Carbohydrates (1 g), Protein (1 g), Vitamin A (as Beta Carotene) (1,500 mcg), and 23 more. Notable high-dose ingredients include Vitamin C at 278% DV, Thiamin at 1,667% DV, Riboflavin at 1,538% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

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

Irwin Naturals Only One, Liquid-Gel Multi with Iron, 60 Liquid Soft-Gels 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 78/100 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 1 verified certifications including Nsf Gmp. 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. 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.