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21st Century   Slow Release Iron - 60 Tablets

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  • 4.7
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21 Reviews

"Have felt stronger with more energy."  Read all reviews

Item Number: CEN1110
Serving Size: 1 Tablet Servings per Container: 60
Price per Serving:  $0.05 Price per Unit*: $0.05 per Tablet
* Price Per Unit may reflect product's price per capsule, tablet, ounce, fluid ounce, etc.
74 In Stock.

This item will ship tomorrow.

Regular Price:  $3.99 $2.77
Deliver one time only
Autoship every days. Never run out.
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Slow Release Iron is a high-potency iron supplement designed to be more gentle to your system.



These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose‚ treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

  • MFG # 530549
  • UPC # 740985273432
Official Website: http://www.21stcenturyvitamins.com

Serving Size: 1 Tablet

Amount Per Serving / % DV

Calcium (As Calcium Carbonate) 31mg / 2%
Iron (As Dried Ferrous Sulfate) 45mg / 250%

Other Ingredients: Hydroxypropyl methylcellulose‚ cellulose‚ stearic acid. Contains <2% of: Artificial colors (FD&C Red #40‚ FD&C Yellow #6‚ FD&C Blue #2 Carmine)‚ dextrin‚ dextrose‚ magnesium stearate‚ maltodextrin‚ medium chain triglycerides‚ PEG‚ polyvinyl alcohol‚ silicon dioxide‚ sodium carboxymethylcellulose‚ sodium citrate‚ talc‚ titanium dioxide.

Gluten-Free / No Added Yeast‚ Preservatives or Artificial Flavors.


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.

Consult a healthcare provider prior to use if pregnant‚ nursing‚ on medications‚ have a medical condition or planning a medical procedure.

Stop use and contact a physician if adverse reactions occur.

Keep out of reach of children.

Do not use if product appears to be tampered with or seal is broken.

Store at room temperature.

Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. In case of accidental overdose‚ call a doctor or Poison Control Center immediately.


  • Gluten Free
  • No Added Sugar

Ratings and Reviews

Write a Review
  • 4.7
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5 21
  • 21 Reviews
    • Great product

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      from MO on 11/19/2021
      This product helps my low iron issue without the stomach problems that normally accompany iron supplements. The fast shipping and price is an extra positive.

      Pros

      Doesn't hurt my stomach

      Cons

      Swallow quick, icky tasting like all iron
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Anemia& Energy

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      from Edinburg TX on 1/29/2021
      Have felt stronger with more energy.

      Pros

      Have felt different since taking this.

      Cons

      None
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Works well

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      from SAN JOSE CA on 1/01/2019
      My daughter is pregnant with twins and this Slow Release Iron by 21st Century does her wonders, no tummy upset!

      Pros

      No upset stomach

      Cons

      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Gentle and does the job!

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      from USA on 2/12/2018
      Iron Slow Release by 21st Century helped my daughter greatly with her anemia without the normal side effects.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Great Quality

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      from Scotia NY on 1/23/2018
      This Iron Slow Release by 21st Century is a great item with no side effects. 

      Pros

      Quality

      Cons

      None
      review-checkI would recommend this item to a friend.
    • Great produt

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      from NY on 9/19/2017
      I don't have any problems with Iron Slow Release by 21st Century just perfect.

      Pros

      Everything

      Cons

      Nothing
      review-checkI would recommend this item to a friend.
    • Great

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      from Texas on 9/15/2017
      I like the Iron Slow Release by 21st Century it's easy on my stomach

      Pros

      Easy on my stomach

      Cons

      It only comes in 45mg strength
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Good source of Iron

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      from TX on 1/19/2017
      Iron Slow Release by 21st Century is a good source of Iron at a great price and does not cause constipation.

      Pros

      Inexpensive, and works well.

      Cons

      review-checkI would recommend this item to a friend.
    • Verified Buyer

      It works!

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      from pgh on 10/07/2016
      Iron Slow Release by 21st Century helped my anemia. I've tried several other, pricier products. All are constipating. Horrible! This one does not have any bad side effects. Great price, too. Iron shouldn't be expensive anyway.

      Pros

      It works!! Low cost.

      Cons

      None
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Too strong

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      from Garnet valley on 8/27/2016
      I think Iron Slow Release by 21st Century may have been too much for my body because every time I tried it I had bad abdominal cramping and diarrhea.
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Customer Questions and Answers

1-2 of 2

  • Question:
    Update, since last q/a on this product. It's wonderful w/my new meds. NO UPSET STOMACH...yeah!
    Michele R Jackson on 6/18/2015 Answer:
    • That's great news, Michele!! 
      PureFormulas on 6/18/2015
  • Question:
    I am a type 2 Diabetic, this product would be o.k. with my GlipizideEr&MetforminEr24hr release?
    Michele R Jackson on 5/27/2015 Answer:
    • Michele, unfortunately no one here is qualified to answer that. We suggest contacting your healthcare practitioner with this question to see what would be best for your health needs :)
      PureFormulas on 5/28/2015

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