21st Century Vitamins and Supplements - For Adults, Women

Slow Release Iron

Slow Release Iron - Main image
$3.39 $4.99 In stock

Category: Minerals

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.

Why Your Body Needs Iron and How This Tablet Delivers It

  • Supports Optimal Iron Levels*
  • Energy & Metabolism Support*
  • Gentle, Slow Release Formula Minimizes Digestive Discomfort*
  • Support for Active Lifestyles & Monthly Iron Needs*

Slow Release Iron Technology: 45 mg Dried Ferrous Sulfate Tablet

  • High-Potency Formula
  • Slow Release Technology that is Gentle on Your System
  • 250% Daily Value of Iron Per Serving
  • 45 mg of Elemental Iron in Each Tablet is Equivalent to 142 mg of Ferrous Sulfate

Feeling Drained?

Your Iron Levels Might Be Talking.* High-Potency Slow Release Iron Supplement for Energy and Healthy Iron Levels.*

For over 35 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.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Kevin ★★★★★

My doctor told me to find a slow release iron since regular tablets were wrecking my stomach, and this one has been so much gentler. I take one tablet with breakfast and my last bloodwork finally showed my levels climbing back up. No nausea, no stomach cramps.

Richard ★★★★★

I switched to this because regular ferrous sulfate was wrecking my stomach, and the slow release really does make a difference for me. One tablet a day keeps my levels up without that cramping feeling an hour later.

Chloe ★★★★★

The 45 mg of elemental iron per tablet is exactly what my doctor suggested, and I appreciate that it’s slow release since my stomach is sensitive. After three weeks, my energy feels steadier and my last blood test showed improvement.