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

Customer Ratings & Reviews

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4.8
Based on 4,373 ratings
3,730
478
126
23
16
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What customers say
Customers have reported significant improvements in their energy levels, mood, and overall physical fitness after using this supplement. Many users have experienced better bone health and calcium levels, attributing these benefits to the combination of calcium and vitamin D3. The product is praised for its high quality, reasonable price, and easy-to-swallow tablets. Some users noted the need to supplement with additional magnesium or take multiple tablets to meet daily requirements. Overall, the supplement has positively impacted users' health and well-being.
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iHerbCustomer
Gold
Posted on Feb 6, 2022
Philippines
6,135
3
2
272
Verified purchase
great product i love it my family loves it. i really love this shop. One stop shop. all my need are here. never taught i would find one with all my needs aRE available. iherb is superb!!! will buy again from this complete shop! fast shipment ever. my digestion was great! no bloating and constipation for me when i start drinking this. i like it. btw the packaging is superb also. quality of the product is superb. the taste is great also.
iHerb customer
Posted on May 28, 2025
Philippines
17
11
0
1
Verified purchase
I've been using this bone supplement for a few weeks and feel confident it's supporting my bone health. It has a good blend of calcium, vitamin D3, magnesium, and sometimes K2—all essential for strong bones. Easy to swallow and gentle on the stomach. Great choice for anyone looking to maintain bone density and overall joint support.
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ENG-AMRO
Posted on Nov 2, 2025
Turkey (Türkiye)
61
56
0
45
Good
Verified purchase
I take this calcium + D3 formula daily to maintain bone strength and fill in dietary deficiencies. The dosage of 500 mg calcium with 600 IU of D3 ensures better absorption. The package is well-sealed, and the quantity is just right for a 3-month supply. No taste or aftertaste, and the quality is consistent. I've had fewer leg cramps since I started using it.
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iHerbCustomer
Posted on Feb 6, 2026
France
61
6
2
13
Прекрасно!
Verified purchase
Quality is super! The ingredients are great! Size arranged! What you need! Performance is felt! the product arranged, perfectly packed, the effect is definitely there! I will order more! Just as quickly delivered
leelee
Posted on Jan 8, 2026
United States
13
1
0
4
excellent
Verified purchase
Great quality.Second time purchasing.These have definitely helped with my vitamin D levels.The ingredients are pretty natural and organic fifty six years old , and I feel it different great packaging
iHerbCustomer
Silver
Posted on May 13, 2025
Azerbaijan
214
1
0
4
Calcium
Verified purchase
It is very high quality calcium for my bones and immune
iHerbCustomer
Posted on Feb 23, 2025
Saudi Arabia
74
0
0
1
Great
Verified purchase
The quality and quantity make this product a fantastic addition to my pantry. Highly recommend!
iHerbCustomer
Posted on Jan 6, 2025
United States
25
1
0
0
Прекрасно!
Verified purchase
I bought it for the first time, I hope that this is good calcium, I relied on the reviews.
MatsudaSeiko
Posted on Dec 29, 2024
United Kingdom (UK)
19
0
0
4
great price and not made in china, thank you ! ^^
Verified purchase
great price and not made in china, thank you ! will definitely buy again !^^
iHerbCustomer
Posted on Jan 30, 2024
United States
132
24
0
64
AVERAGE
Verified purchase
Firstly, the good stuff. The supplement does its job, but I haven't noticed any significant changes. It provides the necessary calcium and vitamin D3, which is essential for bone health. So, if you're expecting a game-changer, this might not be it. On the downside, the pill is quite large compared to other calcium supplements I've taken. If you struggle with swallowing larger pills, this might be a factor to consider. Overall, I'd give it a 3 out of 5 stars. It gets the job done, but the size of the pill is something to keep in mind. Hope this helps!