Natural Factors Super Multi Iron Free, 90 Tablets supplement bottle
Natural Factors

Super Multi Iron Free, 90 Tablets

What We Researched
24 active ingredients analyzed · 4 inactive ingredients decoded · 5 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
82
Product Score Good
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A (100% beta carotene) 6000 mcg 667%
Vitamin C (ascorbic acid) 150 mg 167%
Vitamin D3 (cholecalciferol) (400 IU) 10 mcg 50%
Vitamin E (as d-alpha tocopheryl acid succinate) 33.5 mg 223%
Thiamine (hydrochloride) 25 mg 2,083%
Riboflavin 25 mg 1,923%
Niacin (niacinamide) 50 mg 313%
Vitamin B6 (pyridoxine hydrochloride) 25 mg 1,471%
Folate (800 mcg folic acid) 1360 mcg DFE 340%
Vitamin B12 (cyanocobalamin) 50 mcg 2,083%
Biotin 25 mcg 83%
Pantothenic Acid (calcium pantothenate) 25 mg 500%
Choline (bitartrate) 50 mg 9%
Calcium (carbonate & citrate) 125 mg 10%
Iodine (from kelp) 100 mcg 67%
Magnesium (oxide & citrate) 50 mg 12%
Zinc (citrate) 10 mg 91%
Selenium (chelate) 20 mcg 36%
Manganese (citrate) 5 mg 217%
Chromium (chelate) 100 mcg 286%
Potassium (citrate) 10 mg <1%
Inositol 50 mg *
Para Aminobenzoic Acid 25 mg *
Glutamic Acid HCl 25 mg *
Bioavailability Very Good

Absorption Rating

  • Vitamin A (100% beta carotene) Fair
  • Vitamin C (ascorbic acid) Fair
  • Vitamin D3 (cholecalciferol) (400 IU) Good
  • Vitamin E (as d-alpha tocopheryl acid succinate) Good
  • Thiamine (hydrochloride) Good
  • Riboflavin Good
  • Niacin (niacinamide) Good
  • Vitamin B6 (pyridoxine hydrochloride) Fair
  • Folate (800 mcg folic acid) Fair
  • Vitamin B12 (cyanocobalamin) Fair
  • Biotin Good
  • Pantothenic Acid (calcium pantothenate) Good
  • Choline (bitartrate) Poor
  • Calcium (carbonate & citrate) Good
  • Iodine (from kelp) Good
  • Magnesium (oxide & citrate) Good
  • Zinc (citrate) Fair
  • Selenium (chelate) Good
  • Manganese (citrate) Good
  • Chromium (chelate) Fair
  • Potassium (citrate) Good
  • Inositol Good
  • Para Aminobenzoic Acid Good
  • Glutamic Acid HCl Fair
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Coating (Carbohydrate Gum [Cellulose], Glycerin)
  • Croscarmellose Sodium
  • Magnesium Stearate (Vegetable Grade)
Efficacy Fair

Dosage Analysis

  • Vitamin A (100% beta carotene) 6000 mcg High
  • Vitamin C (ascorbic acid) 150 mg Effective
  • Vitamin D3 (cholecalciferol) (400 IU) 10 mcg Under-dosed
  • Vitamin E (as d-alpha tocopheryl acid succinate) 33.5 mg Effective
  • Thiamine (hydrochloride) 25 mg Effective
  • Riboflavin 25 mg Effective
  • Niacin (niacinamide) 50 mg High
  • Vitamin B6 (pyridoxine hydrochloride) 25 mg Effective
  • Folate (800 mcg folic acid) 1360 mcg DFE High
  • Vitamin B12 (cyanocobalamin) 50 mcg Effective
  • Biotin 25 mcg Under-dosed
  • Pantothenic Acid (calcium pantothenate) 25 mg Effective
  • Choline (bitartrate) 50 mg Under-dosed
  • Calcium (carbonate & citrate) 125 mg Under-dosed
  • Iodine (from kelp) 100 mcg Under-dosed
  • Magnesium (oxide & citrate) 50 mg Under-dosed
  • Zinc (citrate) 10 mg Effective
  • Selenium (chelate) 20 mcg Under-dosed
  • Manganese (citrate) 5 mg Effective
  • Chromium (chelate) 100 mcg Effective
  • Potassium (citrate) 10 mg Under-dosed
  • Inositol 50 mg Under-dosed
  • Para Aminobenzoic Acid 25 mg Under-dosed
  • Glutamic Acid HCl 25 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin A (100% beta carotene) 6000 mcg 667%
Vitamin C (ascorbic acid) 150 mg 167%
Vitamin D3 (cholecalciferol) (400 IU) 10 mcg 50%
Vitamin E (as d-alpha tocopheryl acid succinate) 33.5 mg 223%
Thiamine (hydrochloride) 25 mg 2,083%
Riboflavin 25 mg 1,923%
Niacin (niacinamide) 50 mg 313%
Vitamin B6 (pyridoxine hydrochloride) 25 mg 1,471%
Folate (800 mcg folic acid) 1360 mcg DFE 340%
Vitamin B12 (cyanocobalamin) 50 mcg 2,083%
Biotin 25 mcg 83%
Pantothenic Acid (calcium pantothenate) 25 mg 500%
Choline (bitartrate) 50 mg 9%
Calcium (carbonate & citrate) 125 mg 10%
Iodine (from kelp) 100 mcg 67%
Magnesium (oxide & citrate) 50 mg 12%
Zinc (citrate) 10 mg 91%
Selenium (chelate) 20 mcg 36%
Manganese (citrate) 5 mg 217%
Chromium (chelate) 100 mcg 286%
Potassium (citrate) 10 mg <1%
Inositol 50 mg *
Para Aminobenzoic Acid 25 mg *
Glutamic Acid HCl 25 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Coating (Carbohydrate Gum [Cellulose], Glycerin) Generally_safe

It is used to protect the supplement ingredients and improve swallowability.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Magnesium Stearate (Vegetable Grade) Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$14$13$12$11$10 Mar 12 $11.87
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
Natural Factors

Founded 1950 · Coquitlam, British Columbia, Canada · 390 products · naturalfactors.com

Certifications

5 certifications
B Corp Certified Verified Source
Usp Verified Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

5 incidents
Prop 65 Lead2025-10-31Source
Recall Hi Potency B Complex, RevitalX, Super Multi® IRON FREE2024-07-19Source
Lawsuit Products labeled as containing glucosamine sulfate did not contain the ingredient.2021Source
Prop 65 Lead2016-01-13Source
Recall Natural Factors L-Arginine 500mg2006-04-05Source
Related Supplements
Frequently Asked Questions
Is Natural Factors Super Multi Iron Free, 90 Tablets a good supplement?

Natural Factors Super Multi Iron Free, 90 Tablets received a product quality score of 82/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 24 active ingredients with 90 servings per container. Of the 4 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, Natural Factors, holds a brand trust score of 88/100 with 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project.

What are the ingredients in Natural Factors Super Multi Iron Free, 90 Tablets?

Natural Factors Super Multi Iron Free, 90 Tablets contains 24 active ingredients: Vitamin A (100% beta carotene) (6000 mcg), Vitamin C (ascorbic acid) (150 mg), Vitamin D3 (cholecalciferol) (400 IU) (10 mcg), Vitamin E (as d-alpha tocopheryl acid succinate) (33.5 mg), Thiamine (hydrochloride) (25 mg), Riboflavin (25 mg), and 18 more. Notable high-dose ingredients include Vitamin A at 667% DV, Vitamin E at 223% DV, Thiamine at 2,083% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Natural Factors Super Multi Iron Free, 90 Tablets safe to take?

Natural Factors Super Multi Iron Free, 90 Tablets 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 Natural Factors a trustworthy supplement brand?

Natural Factors receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1950 and headquartered in Coquitlam, British Columbia, Canada, the company offers 390 products in their lineup. They hold 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Natural Factors has 5 historical regulatory incidents on record, which are factored into the trust score.

What is magnesium good for?

Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

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 is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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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.