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Ferrous Sulfate 325 mg

product on market Tablet or Pill Marlex Pharmaceuticals Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 20% of ingredients have research evidence
B Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Ferrous sulfate provides elemental iron to support hemoglobin production and oxygen transport. While the roles of supporting minerals like magnesium and potassium are well-documented, the overall evidence coverage for this specific formulation is limited. Research strongly supports iron supplementation for treating deficiency, though individual tolerance varies.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Ferrous Sulfate 325 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
100
Servings
Mineral
Product Type
20%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Iron
65 mg (361% DV)
Sodium
0.83 mg
Calcium
11.04 mg
0.21 mg
Market median: 500.0mg (1 products) 316 studies (A:8, B:159)
Potassium
0.006 mg

Other Ingredients

Microcrystalline Cellulose Dibasic Calcium Phosphate Dihydrate Anhydrous Lactose Hypromellose Phthalate Croscarmellose Sodium Stearic Acid Magnesium Stearate Triacetin FD&C Red #40 Aluminum Lake Silicon Dioxide, Colloidal Titanium Dioxide Hypromellose Mineral Oil
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Info

Product Information

Directions for Use

Directions: Age - Dosage Adults and children 12 years of age and over - Take one tablet daily, preferably after a meal, or as directed by a physician. Children under 12 years of age - Consult a physician. Do not chew or crush tablet.

- Use by expiration date on package

Warnings & Precautions

Warnings: Since oral iron products interfere with absorption of oral tetracycline antibiotics, these products should not be taken within two hours of each other.

Iron-containing products may cause constipation or diarrhea.

As with any dietary supplement, if you are pregnant or nursing a baby, seek advice of a health professional before using this product.

Warning: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or poison control center immediately.

Formulation Notes

Enteric-coated tablets

(5 Grains)

- Tablets are enteric-coated to help protect your stomach.

Contains the following: - Sodium: 0.83 mg per tablet - Calcium: 11.04 mg per tablet - Magnesium: 0.21 mg per tablet - Potassium: 0.006 mg per tablet

Additional Information

NDC 10135-0161-01

Other information: - Store in a cool, dry place at controlled temperature 15-30 degrees C (59-86 degrees F) - Protect from moisture - Store in original container for better identification

Metadata

Product Details

UPC / SKU3 10135 16101 0
DSLD Entry Date2021-11-19
Product TypeMineral
FormTablet or Pill
BrandMarlex Pharmaceuticals
DSLD ID263374
Data Updated2026-04-11
Research

Research Evidence

566
Research Sources
56
Avg Quality
240
Meta Analysis
100
Clinical Trial
74
Systematic Review
71
Guideline
58
Rct
11
Cochrane Review
4
Regulatory Source
2
Other
2
Narrative Review
1
Observational
1
Openfda Safety
A Systematic review and meta-analysis of intravenous iron therapy for patients with heart failure and iron deficiency
Meta Analysis Nature medicine 2025 PubMed DOI
A Intermittent iron supplementation for reducing anaemia and its associated impairments in adolescent and adult menstruating women
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
A Oral or parenteral iron supplementation to reduce deferral, iron deficiency and/or anaemia in blood donors
Meta Analysis The Cochrane database of systematic reviews 2014 PubMed DOI
A Serum or plasma ferritin concentration as an index of iron deficiency and overload
Meta Analysis The Cochrane database of systematic reviews 2021 PubMed DOI
A Non-invasive diagnostic tests for Helicobacter pylori infection
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Hypoxia-inducible factor stabilisers for the anaemia of chronic kidney disease
Meta Analysis The Cochrane database of systematic reviews 2022 PubMed DOI
A Wheat flour fortification with iron and other micronutrients for reducing anaemia and improving iron status in populations
Meta Analysis The Cochrane database of systematic reviews 2021 PubMed DOI
A Fortification of condiments and seasonings with iron for preventing anaemia and improving health
Meta Analysis The Cochrane database of systematic reviews 2023 PubMed DOI
A Screening and Supplementation for Iron Deficiency and Iron Deficiency Anemia During Pregnancy: US Preventive Services Task Force Recommendation Statement.
Guideline JAMA 2024 PubMed DOI
A Psychiatric and cognitive outcomes of iron supplementation in non-anemic children, adolescents, and menstruating adults: A meta-analysis and systematic review
Meta Analysis Neuroscience and biobehavioral reviews 2025 PubMed DOI
View all evidence for Iron →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.