








💪 Elevate your bone game with science-backed strength!
21st Century Calcium 500 mg Plus D3 Tablets deliver a potent daily dose of calcium sourced from oyster shell, paired with vitamin D3 to optimize absorption. This gluten-free, additive-free formula supports bone health and is designed for easy integration into your daily wellness routine. With over 30 years of trusted manufacturing, it’s a reliable choice for health-conscious adults seeking to maintain strong bones and overall vitality.

| ASIN | B00H3KR9WC |
| ASIN | B00H3KR9WC |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #87,945 in Health & Household ( See Top 100 in Health & Household ) #483 in Calcium Mineral Supplements #3,836 in Sales & Deals |
| Brand Name | 21st Century |
| Concentration | 500 Mg |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,750) |
| Date First Available | December 9, 2013 |
| Diet Type | Gluten Free |
| Flavor | Unflavored |
| Global Trade Identification Number | 00740985275238 |
| Is Discontinued By Manufacturer | No |
| Item Form | Tablet |
| Item Nype Name | Calcium Supplement |
| Item Weight | 1.5 Pounds |
| Item model number | 27523 |
| Manufacturer | 21st Century HealthCare, Inc. |
| Manufacturer | 21st Century HealthCare, Inc. |
| Manufacturer Part Number | 27523 |
| Material Type Free | Gluten Free, No Artificial Colors, No Artificial Flavors |
| Model Number | 27523 |
| Number of Items | 1 |
| Primary Supplement Type | Calcium, Vitamin D3 |
| Product Benefits | Bone Strength |
| Product Dimensions | 3.13 x 3.13 x 6.5 inches; 1.48 Pounds |
| UPC | 740985275238 |
| Unit Count | 400 Count |
D**R
good price
good item
M**N
Great Price!
Per doctor’s recommendation I take calcium with D3 everyday and I found this brand on Amazon. This brand is a great value as it comes in a two pack. I take them every night about an hour before going to bed. I read somewhere years ago that calcium is a natural relaxant so I’ve always taken my calcium supplements before bedtime.
L**N
Price
Great product and great price!
M**X
Good quality supplements
Good supplements. Have been taking them for a while. Only once, a bottle came already opened. They gave me a refund and told me to keep the bottle. But I was not going to use those pills. So I had a bottle of unusable pills to get rid of. Still, it was good customer service, which I appreciate.
J**Y
good price - fast delivery
Just what the Doctor ordered and arrived right on time
L**Y
Good replacement for OsCal
These are a good replacement for the now-discontinued OsCal calcium supplements. I use them twice daily, and after several months my labs still are great.
S**D
Good product for less than my prescription
Was ordering similar product with half the pills for the same price from the pharmacy
L**.
Great calcium
I purchased these for every day use. I canceled my Costco card. And therefore this was the next best thing. I am happy with them.
Y**E
Llego en tiempo y forma, todo perfecto
Trustpilot
2 weeks ago
1 week ago