Page 1 - Reviews - 21st Century, Calcium 500 + D3, 90 Tablets - iHerb

Customer Ratings & Reviews

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4.8
Based on 5,336 ratings
4,581
546
161
29
19
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What customers say
Customers report significant improvements in health, mood, energy levels, and overall quality of life after using this vitamin supplement. Many users highlight increased alertness, better immune system function, and enhanced bone health due to the calcium and vitamin D3 content. The product is praised for its good quality, reasonable price, and ease of consumption. Some users noted it has a positive impact on hair growth and strength. While a few mentioned the presence of artificial colors and other ingredients as a downside, the general consensus is overwhelmingly positive with many recommending it highly.
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iHerb customer
Posted on Feb 22, 2016
Bangladesh
8
0
0
146
Works effectively Russian counterparts.
Verified purchase
We took a therapeutic dose of the assigned therapist WHO and through breastfeeding. Pregnancy and breast-like calcium leaches very rapidly. Prior to that, drinking rates Nycomed have something to compare. The drug works effectively than any of the presented to the Russian Federation. Nails became noticeably stronger hair stopped falling out. Teeth stopped whining, stop the destruction of tooth enamel. The result is. Dosage optimal. Recommended!
Auto-translated from Russian
iHerb customer
Posted on Nov 10, 2025
Brazil
86
0
4
3
Прекрасно!
Verified purchase
Thank you very much for this product, it suited me, I like the packaging, comfortable and stylish, I will order more of these products, and recommend them to all my friends and relatives! good!!
Didi
Gold
Posted on Oct 2, 2025
United States
1,522
0
0
29
Verified purchase
The supplement’s composition is balanced, the serving frequency is simple, and the ingredient quality is premium. It’s highly recommended and very beneficial for supporting diet and endurance.
Miranda
Gold
Posted on Nov 6, 2025
Moldova, Republic of
857
0
0
25
Verified purchase
it’s subtle—so the benefits are more long‑term rather than immediate—and I make sure to take them with a meal to help absorption.
iHerb customer
Posted on Apr 8, 2026
Korea, Republic of
17
0
0
0
Verified purchase
packages have shown up early. works well. smaller casuals are a good size, making them easier to throw back in the morning they don't sit in the throat long enough to taste the ingredients. good quality, yet to have a busted capsule. good size container with cotton wadding. I can see the effects daily through my weight loss and increase of energy
iHerb customer
Silver
Posted on Feb 28, 2026
Saudi Arabia
236
0
0
0
Calcium 500 + D3
Verified purchase
I appreciate the combination of calcium and vitamin D3, which is essential for proper calcium absorption and maintaining strong bones. Since these are tablets, there is no noticeable taste or aftertaste, which makes them easy to take daily without any discomfort. Overall, Calcium 500 + D3 is a high-quality supplement that effectively supports bone health and general wellness.
Sam
Posted on Dec 15, 2025
Hong Kong
20
0
0
2
Verified purchase
Absolutely a necessary. Bought these for my mom and she’s been feeling so much better. I keep repurchasing since these are the only ones that work efficiently and affordable. The package size is big has 400 tablets and really does wonders for the bones and have seen many improvement since the beginning.
iHerb customer
Posted on Sep 2, 2025
Bosnia and Herzegovina
10
2
0
0
Review for 21st Century, Calcium 500 + D3, 5 mcg, 90 tablets
Verified purchase
I’ve been using 21st Century Calcium 500 + D3 for a while now, and I’m very satisfied with the results. Each tablet provides a good dose of calcium together with vitamin D3, which helps the body absorb the calcium more effectively. The tablets are easy to swallow, and I haven’t experienced any stomach discomfort or side effects. I also like that the product comes in a practical bottle with 90 tablets, which lasts for a good amount of time and is budget-friendly compared to similar supplements. It’s a reliable choice for anyone who wants to support bone health, especially if you don’t get enough calcium or vitamin D from your diet. Overall, this supplement is a simple, affordable, and effective way to strengthen bones and maintain healthy teeth. I would definitely recommend it to others looking for a daily calcium boost.
g
Gold
Posted on Jun 13, 2025
Singapore
7,041
0
0
930
Verified purchase
I’ve been using 21st Century’s Calcium + D3 for years to support my bone health, and my last scan showed improved density—my doctor was impressed! The tablets are small and easy to swallow, though I take them with meals to avoid any stomach discomfort (a tip I learned the hard way). I appreciate that they’re affordable enough for daily use, unlike some fancy brands, and the 400-count bottle lasts forever. The added vitamin D3 makes me feel confident I’m absorbing the calcium properly—this is one supplement I’ll never stop taking.
iHerbCustomer
Posted on Jun 9, 2025
United States
13
0
0
1
Excellent quality product
Verified purchase
I just placed another order, for my wife & her dad. Love the fact that it combines the Calcium needed for bone health, as well as the D3 needed for overall health. The benefits they receive are 2-fold, & the price it tough to beat. I recommend this for anyone of any age.