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

100% authenticOur products are sourced directly from brands or authorized distributors.Show more
4.8
Based on 4,371 ratings
3,728
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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English
Translated reviews
Ali
Posted on Aug 1, 2024
United Arab Emirates
334
1
5
16
Verified purchase
The product's taste is exceptional, reflecting its high quality and premium ingredients, while the health benefits are evident and the package is both attractive and functional.
iHerb customer
Posted on Mar 6, 2025
United Arab Emirates
116
0
0
1
Verified purchase
Great product very useful highly recommend products improvement of health
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
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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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
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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iHerb customer
Posted on Nov 1, 2025
Australia
8
0
0
1
Makes a difference
Verified purchase
My nails are brittle without these. Well priced and good quality. Tablets are easy to swallow and don't taste bad. Great to get combined Calcium and Vitamin D dosage.
Didi
Gold
Posted on Oct 3, 2025
United States
1,522
0
0
31
Verified purchase
The supplement supports my diet perfectly. The quality, capsule size, and ingredient composition have been beneficial when taken at the recommended frequency for long term endurance and health.
Gaukhar
Silver
Posted on Sep 23, 2025
United States
168
0
0
0
Good Calcium with Vitamin D3
Verified purchase
Affordable and effective supplement for bone support. I like that it includes both calcium and vitamin D3 for better absorption. The tablets are a little big, but still manageable. Great value for daily use.
taromilkgreentea
Posted on Sep 26, 2025
Hong Kong
34
1
1
2
Verified purchase
this product is of good quality. This is a supplement of calcium combined with vitamin D D3. It has no taste which is good. The packaging is dirty and it has a flip-up lid for convenient usage. I am no expert so I cannot comment on the ingredient or the benefits.