Nutritional Supplements Manufacturer of the Year 2026 by Food Business Review
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Slow Release Iron
Slow Release Iron
27343
High Potency Slow Release Iron is formulated to provide a gentle release of iron to minimizing discomfort making it an ideal choice for those seeking to maintain optimal iron levels without the common side effects of traditional iron supplements.*
- The 45 mg of elemental iron in each tablet is equivalent to 142 mg of Ferrous Sulfate.
- Gluten Free
Compare VS. Slow Fe®†
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$4.99 USD
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Description
Description
21st Century Slow Release Iron is a high-potency formula that delivers 45 mg of elemental iron in each tablet - equivalent to 142 g of Ferrous Sulfate - to support optimal iron levels. This formula provides a gentle release of iron to minimize discomfort and common side effects of traditional iron supplements.
Perfect Iron Support for Every Stage of Life*‡
- Vegetarians & Vegans - Bridge potential dietary iron gaps from plant-based diets*
- Active Individuals - Added support during physical activity*
- Seniors - Maintain healthy iron levels to support overall vitality*
- Busy Professionals - Support overall wellness throughout demanding workdays*
- Women During Monthly Cycles - Aids in replacing iron lost during menstruation*
Trusted Iron Supplement Support
- High-Potency Formula - Each tablet delivers 45 mg of elemental iron (250% Daily Value)*
- Gentle Slow Release Technology - Formulated to minimize digestive discomfort*
- Convenient Once-Daily Dosing - Simple to incorporate in your daily routine*
- Laboratory Tested - Quality guaranteed through rigorous testing protocols*
You Daily Defense
When your body requires iron, only the best will do. 21st Century Slow Release Iron works harmoniously with your body's natural processes.*
For over 30 years, 21st Century Vitamins has provided trusted vitamins and supplements by upholding the highest standards of quality in every product we offer. From sourcing the finest ingredients to rigorous testing and production processes, we ensure that every product meets our stringent quality benchmarks. We are here to support your wellness every step of the way.
†This product is not manufactured or distributed by Novartis AG, owner of the registered trademark Slow FE®.
‡Consult with your healthcare provider before adding iron to your daily regimen.
Directions
Directions
Directions: As a mineral supplement, adults take one (1) tablet daily with any meal or as directed by a healthcare provider. Do not exceed recommended dosage. Individual results may vary. No intended for use in children.
Warnings
Warnings
Warning: Iron may interfere with absorption of certain antibiotics; these products shouldn't be taken within two hours or each other. Iron-containing products may cause occasional bowel effects such as constipation. Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning a medical procedure. Stop use and contact a physician if adverse reactions occur.
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.
Keep out of reach of children. Do not use product appears to be tampered with or seal is broken. Store at room temperature.
Question about this product?
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| Supplement Facts Serving Size 1 Tablet | ||
|---|---|---|
| Amount Per Serving | % Daily Value | |
|
Iron (as Dried Ferrous Sulfate) |
45 mg | 250% |
Other Ingredients: Hydroxypropyl Methylcellulose, Dextrose, Cellulose, Stearic Acid. Contains <2% of: Artificial Colors (FD&C Blue #2 Carmine, FD&C Red #40, FD&C Yellow #6), Dextrin, Magnesium Silicate, Magnesium Stearate, Medium Chain Triglycerides, Polyethylene Glycol, Polyvinyl Alcohol, Silicon Dioxide, Sodium Carboxymethylcellulose, Sodium Citrate, Titanium Dioxide.
No added Yeast or Artificial Flavors.
Contains a bioengineered food ingredient.IMPORTANT: This information may differ from the product you purchased. Please refer to the supplement facts listed on the package label for information related to the purchased product.
Dietary Restrictions
-
Gluten Free

Allergen Information
We understand the importance of clear and transparent allergen information. We are committed to sharing accurate details about our products and their ingredients. While we take steps to ensure the quality and consistency of every item, we recommend that customers always review the product packaging and ingredient list prior to use, especially if they have any specific dietary sensitivities or allergy concerns.
Please note that manufacturing and packaging processes may vary depending on the product, and some items may be produced in facilities that also handle a range of other ingredients. Because of this, we always suggest referring to the most up-to-date information on the label and consulting a qualified healthcare provider when in doubt.
Slow Release Iron
$4.99 USD
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