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💪 Elevate your energy with iron that’s as smart as you are!
21st Century Slow Release Iron Tablets provide a potent 45mg elemental iron dose per tablet with a slow-release formula designed to enhance absorption and reduce stomach discomfort. Gluten-free and free from preservatives and artificial flavors, this 60-count bottle offers a convenient once-daily supplement trusted for over three decades to support healthy red blood cell production and sustained vitality.













| ASIN | B00582WT6I |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #2,077 in Health & Household ( See Top 100 in Health & Household ) #12 in Iron Mineral Supplements #279 in Sales & Deals |
| Brand | 21st Century |
| Brand Name | 21st Century |
| Customer Reviews | 4.6 out of 5 stars 15,020 Reviews |
| Diet Type | Gluten Free |
| Dose Release Method | Extended Release |
| Flavor | Unflavored |
| Global Trade Identification Number | 00740985273432 |
| Item Form | Tablet |
| Item Weight | 1.76 ounces |
| Manufacturer | 21st Century Healthcare |
| Manufacturer Part Number | B005LEMT1I |
| Material Type Free | preservatives free,yeast free |
| Model Number | 27343 |
| Number of Items | 1 |
| Primary Supplement Type | Magnesium |
| Product Benefits | Iron Support |
| Supplement Formulation | Individual Supplement |
| UPC | 740985273432 |
| Unit Count | 60 Count |
T**L
Works & doesn't bother my stomach!
Good iron at a good price that does not hurt my stomach. Really like this brand!
S**T
Easy on the stomach
Best iron supplement I can buy. Easy on the stomach. Awesome value for the price.
V**A
Slow release is BEST for WLS patients.
Great product for those who have had sleeve and bypass. I take this one at night since it’s solid pill and 12 hours later another brand that’s a capsule so it’s easier on my stomach during the day.
R**S
Comparable to Slow Fe — Much More Affordable and Works Just as Well
Comparable to Slow Fe — Much More Affordable & Just as Effective These have been a great alternative to Slow Fe. My hematologist originally recommended Slow Fe because regular iron tablets were not absorbing properly, and I was having to get iron infusions. After switching to slow-release iron, my iron levels improved. I decided to try 21st Century Slow Release Iron because it’s significantly more affordable, and I’m very happy I did. They work just as well for me and have helped maintain my iron levels without needing infusions. One of the biggest advantages is the packaging. Slow Fe comes in individual blister packs that can be hard to open. These come in a simple bottle, which is much more convenient — no struggling to open each pill. They are also gentle on my stomach, which is very important with iron supplements. If you’re looking for a budget-friendly alternative to Slow Fe that actually works, this is a great option. Highly recommend!
L**A
Great product but a huge waste in packaging*make bottle smaller
Great product but such a waste in packaging. Iron always make me throw up yet I’m deficient in it so need to take it. When I saw these were slow release I figured I’d give it a try hoping I’d do better with it. I was right and this doesn’t upset my stomach at all. At first I tried it with food to be safe but now I am able to just take it as is and not be affected. Before this I would throw up within 10min of having anything with iron in it. For the price, 60 pills is wonderful. Very cost effective and pill is nice and smaller side. Only con is the bottle. Such a huuggeee bottle for nothing. It takes up so much space yet only the bottom is covered in pills. This doesn’t need to be in a gigantic bottle just to seem like you’re getting more. You already get a lot, just put it in a smaller bottle with less plastic and waste. Bottom line: great!
M**E
Very effective with no nausea!
I’m anemic and my doctor told me I need to take iron daily. I have gotten very nauseous in the past taking iron supplements. I have been taking this for a year now and my iron levels are much better. I haven’t experienced the nausea like I did before. I’m sticking with this brand.
J**S
No stomach upset
Super affordable and does not upset your stomach at all. Thank goodness for slow release iron because the other type makes me so sick to my stomach if you were on the fence because you were nervous about your stomach this is definitely the one to try.
C**E
Review
Unsure about effectiveness, but I like how small they are - makes them easy to swallow. If only all vitamins/supplements were tiny.
P**S
Such great iron pills
I love these pills. Gentle on the tummy and such great value for money. I get them for my parents as well. Used to get them on an Amazon subscription in the US. And was pretty miffed that I couldn't get them in Australia. But nowwww. I can. Yaaaaayyyy.
A**N
Best Buy Great Price plenty of Tablets
Great Price Month's in the Bottle
D**G
Easy to take
Works well
Trustpilot
4 days ago
1 month ago