Customize Your Shopping Experience!

Please select the destination country, language, and currency you prefer.

Available Shipping Methods
Available Payment Methods
Added to Cart
Combo Discount:
View/Edit Cart Checkout
Cart Total:
Customers Also Bought:

21st Century Health Care, Oyster Shell Calcium 500 + D3, 400 Tablets (Discontinued Item)

By 21st Century Health Care

Our Price:
You Save:
$2.90 (29%)
Earn 10% Loyalty Credit ?


close button

The item is currently out of stock and replenishment is unconfirmed.

Out of Stock - Discontinued
  • Product Code: CEN-22727
  • UPC Code: 740985227275
  • Package Quantity: 400 Tablets
  • Dimensions: 3.2 x 3.2 x 6.6 in, 1.5 lbs (0.68 kg)

Product Overview

  • Value Size
  • Dietary Supplement
  • Super Value
  • Extra Vitamin D††
  • Compare to Active Ingredients in Os Cal 500 +D

Regular exercise and a healthy diet with enough calcium helps teen and young adult Caucasian and Asian women maintain good bone health and may reduce their high risk of osteoporosis later in life. Adequate calcium intake is important, but daily intakes above about 2,000 mg are not likely to provide any additional benefit. Now with extra Vitamin D. Vitamin D is essential for use of calcium and necessary for healthy bones, teeth and cartilage.

††Compared to the original formula.

Suggested Use

As a dietary supplement, take two tablets daily with any meal, or as directed by your healthcare provider. Do not exceed recommended dosage.

Other Ingredients

Cellulose, croscarmellose sodium, polyvinyl alcohol, titanium dioxide, stearic acid, PEG, talc, magnesium stearate, artificial colors (FD&C Blue #1, FD&C Yellow #5). Contains a shellfish ingredient (oyster shell).

Unconditionally guaranteed for purity, freshness and label potency. No sugar, yeast, preservatives or artificial flavors.


Keep out of reach of children. Do not use if product appears to be tampered with or seal is broken. Store at room temperature.

Visit Manufacturer's Website
Supplement Facts
Serving Size: 2 Tablets
Servings Per Container: 200
  Amount Per Serving % DV
Vitamin D3 (as Cholecalciferol) 800 IU 200%
Calcium (from Oyster Shell) 1000 mg 100%
Percent Daily Value (DV).

iHerb Customer Reviews

5 Stars
4 Stars
3 Stars
2 Stars
1 Stars

Good for the price

Posted by 4993377861818758552 on Aug 16, 2012

It's good. But not easy to swallow.

Was this review helpful to you?

2 people found the following review helpful

21st Century Health Care, Calcium 500 + D, 400 Tablets

Posted by Reviewer1545548 on Aug 12, 2009

good balance for calcium and D

Was this review helpful to you?

1 person found the following review helpful

Good Price

Posted by Reviewer1570578 on Dec 09, 2009

I have to take calcium at my age. I feel good knowing all the products from iherb are pure and my body is benefiting from them.

Was this review helpful to you?

good value

Posted by Reviewer1801639 on Jan 21, 2010

good value

Was this review helpful to you?

21st Century Calcium 500 plus Vitamin D

Posted by Reviewer2988854 on Jul 11, 2010

I like this product because it meets all of the requirements of a calcium supplement as prescribed by my orthopedist at a reasonable cost. Contains oyster shell form of calcium and vitamin D.

Was this review helpful to you?

See All Reviews