NaturesPlus Ultra One Daily Iron Free supplement bottle
NaturesPlus

Ultra One Daily Iron Free

What We Researched
24 active ingredients analyzed · 6 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
89
Product Score Good
59
Brand Score Poor

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A (as Beta-Carotene) 3000 mcg RAE 333%
Vitamin C (as Ascorbic Acid) 150 mg 167%
Vitamin D (as Cholecalciferol, Vitamin D3) 10 mcg 50%
Vitamin E (as D-Alpha-Tocopheryl Succinate) 67 mg 447%
Thiamine (as Thiamine Mononitrate, Vitamin B1) 25 mg 2083%
Riboflavin (as Vitamin B2) 25 mg 1923%
Niacin (as Niacinamide) 100 mg NE 625%
Vitamin B6 (as Pyridoxine Hydrochloride) 25 mg 1471%
Folate (as Calcium L-5-Methyltetrahydrofolate) 667 mcg DFE 167%
Vitamin B12 (as Methylcobalamin) 100 mcg 4167%
Biotin 300 mcg 1000%
Pantothenic Acid (as D-Calcium Pantothenate) 50 mg 1000%
Choline (as Choline Bitartrate) 10.5 mg 2%
Calcium (as Calcium Carbonate, Calcium Citrate) 25 mg 2%
Iodine (as Potassium Iodide) 150 mcg 100%
Magnesium (as Magnesium Aspartate, Magnesium Oxide) 7.2 mg 2%
Zinc (as Zinc Oxide, Zinc Picolinate) 15 mg 136%
Selenium (as Selenomethionine, Sodium Selenite) 200 mcg 364%
Copper (as Copper Gluconate) 2 mg 222%
Manganese (as Manganese Gluconate, Manganese Sulfate) 5 mg 217%
Chromium (as Chromium Chloride, Chromium Picolinate) 200 mcg 571%
Molybdenum (as Sodium Molybdate) 150 mcg 333%
Para-Aminobenzoic Acid 25 mg
Inositol 25 mg
Bioavailability Very Good

Absorption Rating

  • Vitamin A (as Beta-Carotene) Fair
  • Vitamin C (as Ascorbic Acid) Fair
  • Vitamin D (as Cholecalciferol, Vitamin D3) Good
  • Vitamin E (as D-Alpha-Tocopheryl Succinate) Good
  • Thiamine (as Thiamine Mononitrate, Vitamin B1) Fair
  • Riboflavin (as Vitamin B2) Good
  • Niacin (as Niacinamide) Good
  • Vitamin B6 (as Pyridoxine Hydrochloride) Fair
  • Folate (as Calcium L-5-Methyltetrahydrofolate) Good
  • Vitamin B12 (as Methylcobalamin) Good
  • Biotin Good
  • Pantothenic Acid (as D-Calcium Pantothenate) Good
  • Choline (as Choline Bitartrate) Poor
  • Calcium (as Calcium Carbonate, Calcium Citrate) Fair
  • Iodine (as Potassium Iodide) Good
  • Magnesium (as Magnesium Aspartate, Magnesium Oxide) Good
  • Zinc (as Zinc Oxide, Zinc Picolinate) Good
  • Selenium (as Selenomethionine, Sodium Selenite) Good
  • Copper (as Copper Gluconate) Good
  • Manganese (as Manganese Gluconate, Manganese Sulfate) Good
  • Chromium (as Chromium Chloride, Chromium Picolinate) Good
  • Molybdenum (as Sodium Molybdate) Good
  • Para-Aminobenzoic Acid Good
  • Inositol Good
Other Ingredients Excellent

Fillers & Additives

  • Cellulose
  • Magnesium Stearate
  • Potassium Citrate
  • Silica
  • Water
  • Purified
Efficacy Good

Dosage Analysis

  • Vitamin A (as Beta-Carotene) 3000 mcg RAE Effective
  • Vitamin C (as Ascorbic Acid) 150 mg Effective
  • Vitamin D (as Cholecalciferol, Vitamin D3) 10 mcg Under-dosed
  • Vitamin E (as D-Alpha-Tocopheryl Succinate) 67 mg Effective
  • Thiamine (as Thiamine Mononitrate, Vitamin B1) 25 mg Effective
  • Riboflavin (as Vitamin B2) 25 mg Effective
  • Niacin (as Niacinamide) 100 mg NE High
  • Vitamin B6 (as Pyridoxine Hydrochloride) 25 mg Effective
  • Folate (as Calcium L-5-Methyltetrahydrofolate) 667 mcg DFE Effective
  • Vitamin B12 (as Methylcobalamin) 100 mcg Effective
  • Biotin 300 mcg Effective
  • Pantothenic Acid (as D-Calcium Pantothenate) 50 mg Effective
  • Choline (as Choline Bitartrate) 10.5 mg Under-dosed
  • Calcium (as Calcium Carbonate, Calcium Citrate) 25 mg Under-dosed
  • Iodine (as Potassium Iodide) 150 mcg Effective
  • Magnesium (as Magnesium Aspartate, Magnesium Oxide) 7.2 mg Under-dosed
  • Zinc (as Zinc Oxide, Zinc Picolinate) 15 mg Effective
  • Selenium (as Selenomethionine, Sodium Selenite) 200 mcg Effective
  • Copper (as Copper Gluconate) 2 mg Effective
  • Manganese (as Manganese Gluconate, Manganese Sulfate) 5 mg Effective
  • Chromium (as Chromium Chloride, Chromium Picolinate) 200 mcg Effective
  • Molybdenum (as Sodium Molybdate) 150 mcg Effective
  • Para-Aminobenzoic Acid 25 mg Under-dosed
  • Inositol 25 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin A (as Beta-Carotene) 3000 mcg RAE 333%
Vitamin C (as Ascorbic Acid) 150 mg 167%
Vitamin D (as Cholecalciferol, Vitamin D3) 10 mcg 50%
Vitamin E (as D-Alpha-Tocopheryl Succinate) 67 mg 447%
Thiamine (as Thiamine Mononitrate, Vitamin B1) 25 mg 2083%
Riboflavin (as Vitamin B2) 25 mg 1923%
Niacin (as Niacinamide) 100 mg NE 625%
Vitamin B6 (as Pyridoxine Hydrochloride) 25 mg 1471%
Folate (as Calcium L-5-Methyltetrahydrofolate) 667 mcg DFE 167%
Vitamin B12 (as Methylcobalamin) 100 mcg 4167%
Biotin 300 mcg 1000%
Pantothenic Acid (as D-Calcium Pantothenate) 50 mg 1000%
Choline (as Choline Bitartrate) 10.5 mg 2%
Calcium (as Calcium Carbonate, Calcium Citrate) 25 mg 2%
Iodine (as Potassium Iodide) 150 mcg 100%
Magnesium (as Magnesium Aspartate, Magnesium Oxide) 7.2 mg 2%
Zinc (as Zinc Oxide, Zinc Picolinate) 15 mg 136%
Selenium (as Selenomethionine, Sodium Selenite) 200 mcg 364%
Copper (as Copper Gluconate) 2 mg 222%
Manganese (as Manganese Gluconate, Manganese Sulfate) 5 mg 217%
Chromium (as Chromium Chloride, Chromium Picolinate) 200 mcg 571%
Molybdenum (as Sodium Molybdate) 150 mcg 333%
Para-Aminobenzoic Acid 25 mg
Inositol 25 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Potassium Citrate Safe

It is used as a mineral supplement and buffer.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Water Safe

Dissolves and carries water-soluble ingredients.

Purified Unknown

Price Comparison

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

Brand Trust Report
NaturesPlus

Founded 1972 · Melville, New York, United States · 420 products · naturesplus.com

Transparency

3 claims
Third Party Testing Claim — Claimed
In House Testing — Claimed

Violation History

1 incident
Recall Keto Living Sugar Control Capsules2022-05-06Source
Related Supplements
Frequently Asked Questions
Is NaturesPlus Ultra One Daily Iron Free a good supplement?

NaturesPlus Ultra One Daily Iron Free received a product quality score of 89/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 24 active ingredients with 60 servings per container. Of the 6 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, NaturesPlus, holds a brand trust score of 59/100.

What are the ingredients in NaturesPlus Ultra One Daily Iron Free?

NaturesPlus Ultra One Daily Iron Free contains 24 active ingredients: Vitamin A (as Beta-Carotene) (3000 mcg RAE), Vitamin C (as Ascorbic Acid) (150 mg), Vitamin D (as Cholecalciferol, Vitamin D3) (10 mcg), Vitamin E (as D-Alpha-Tocopheryl Succinate) (67 mg), Thiamine (as Thiamine Mononitrate, Vitamin B1) (25 mg), Riboflavin (as Vitamin B2) (25 mg), and 18 more. Notable high-dose ingredients include Vitamin A at 333% DV, Vitamin E at 447% DV, Thiamine at 2083% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is NaturesPlus Ultra One Daily Iron Free safe to take?

NaturesPlus Ultra One Daily Iron Free 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 NaturesPlus a trustworthy supplement brand?

NaturesPlus receives a brand trust score of 59/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1972 and headquartered in Melville, New York, United States, the company offers 420 products in their lineup. Note: NaturesPlus has 1 historical regulatory incident 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.