Mason Natural Slow Release Iron, High Potency, 60 Tablets (50 mg per Tablet) supplement bottle
Mason Natural

Slow Release Iron, High Potency, 60 Tablets (50 mg per Tablet)

What We Researched
1 active ingredient analyzed · 11 inactive ingredients decoded · 2 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
61
Product Score Fair
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Iron (as Ferrous Sulfate) 50 mg 278%
Bioavailability Fair

Absorption Rating

  • Iron (as Ferrous Sulfate) Fair
Other Ingredients Poor

Fillers & Additives

  • Microcrystalline Cellulose
  • Hydroxypropyl Methylcellulose
  • Stearic Acid
  • Magnesium Stearate
  • Silicon Dioxide
  • Pharmaceutical Glaze
  • Titanium Dioxide High
  • Glyceryl Triacetate
  • FD&C Yellow #5 Medium
  • FD&C Red #40 Medium
  • Magnesium Silicate
Efficacy Very Good

Dosage Analysis

  • Iron (as Ferrous Sulfate) 50 mg High

Supplement Facts

Ingredient Amount % Daily Value
Iron (as Ferrous Sulfate) 50 mg 278%

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.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Pharmaceutical Glaze Generally_safe

It is used to coat tablets or capsules for easier swallowing or controlled release.

Titanium Dioxide Caution

Used as a whitening agent in tablet coatings and capsules.

Glyceryl Triacetate Generally_safe

It is used as a solvent or to improve the texture of supplements.

FD&C Yellow #5 Caution

It is added to supplements to provide color.

FD&C Red #40 Caution

It is used to improve the appearance of the supplement.

Magnesium Silicate Generally_safe

It is used to improve powder flow and prevent clumping.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$8$7$6$5$4 Mar 12 $6.13
iHerb

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

Brand Trust Report
Mason Natural

Founded 1967 · Miami Lakes, Florida, USA · 161 products · masonvitamins.com

Certifications

2 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

4 incidents
Recall Herbal Colon Cleanser Capsules2025-09-02Source
Recall Healthy Sense Daily Multiple with Iron and People's Choice Women's Daily Vitamins with Iron2022-11-17Source
Prop 65 Lead2017-03-10Source
Prop 65 Lead2016-03-28Source
Related Supplements
Frequently Asked Questions
Is Mason Natural Slow Release Iron, High Potency a good supplement?

Mason Natural Slow Release Iron, High Potency, 60 Tablets (50 mg per Tablet) received a product quality score of 61/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 1 active ingredients Of the 11 inactive ingredients, 5 are rated safe and 3 are flagged for review. The manufacturer, Mason Natural, holds a brand trust score of 66/100 with 2 verified certifications including Consumerlab, Fda Gmp Inspections.

What are the ingredients in Mason Natural Slow Release Iron, High Potency?

Mason Natural Slow Release Iron, High Potency contains 1 active ingredients: Iron (as Ferrous Sulfate) (50 mg). Notable high-dose ingredients include Iron at 278% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Mason Natural Slow Release Iron, High Potency safe to take?

Mason Natural Slow Release Iron, High Potency, 60 Tablets (50 mg per Tablet) has been analyzed for ingredient safety across all its components. Of 11 inactive ingredients, 5 are rated safe. 3 ingredients are flagged for review: Titanium Dioxide, FD&C Yellow #5, FD&C Red #40. '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 Mason Natural a trustworthy supplement brand?

Mason Natural receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1967 and headquartered in Miami Lakes, Florida, USA, the company offers 161 products in their lineup. They hold 2 verified certifications including Consumerlab, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Mason Natural has 4 historical regulatory incidents on record, which are factored into the trust score.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.