Skip to content

21st Century, Calcium Citrate + D3 Maximum

SKU CEN-27492
UPC 740985274927
Original price $5.35 - Original price $7.11
Original price
$5.35 - $7.11
Current price $5.35
$0.11 /g of Calcium (Citrate)
Form: Tablets
Dose: 630 mg
Quantity: 75 Count

Quality Testing

The Quality Grade for this product is "NT" (Not Tested). We aim to test all the products Health Orchard offers, and will publish the Quality Testing results on each product’s page once they are available. Our goal is to empower our customers with the information they need to find safe and high-quality health supplements.
Testing Result
USP Allowed

Supplement & Nutrition Facts

Serving Size: 2 Tablets
Servings Per Container: 37
  Amount Per Serving % Daily Value
Vitamin D3 (as Cholecalciferol)
13 mcg (500 IU)
Calcium (as Calcium Citrate)
630 mg

Product Description


Promote bone health and immune support with 21st Century Calcium Citrate + D3 Maximum, delivering optimal calcium absorption and vitamin D3 benefits.

Calcium citrate is a highly absorbable form of calcium that, when combined with vitamin D3, provides optimal support for bone health. This supplement from 21st Century is designed to promote strong, healthy bones and is gluten-free. It has undergone laboratory testing to ensure its quality.

  • Highly bioavailable calcium citrate for better absorption
  • Includes vitamin D3 to facilitate calcium uptake
  • Promotes strong, healthy bones


As a dietary supplement, adults take two (2) tablets with any meal, twice daily or as directed by a healthcare provider. Do not exceed recommended dosage. Individual result may vary.


Cellulose, stearic acid. Contains <2% of: BHA, BHT, croscarmellose sodium, gelatin, magnesium silicate, magnesium stearate, peg, polyvinyl alcohol, starch, sucrose, talc, titanium dioxide, vegetable oil, water.

No added yeast or artificial flavors.

Health risks and warnings

Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning any medical procedure. Stop use and contact a physician if adverse reactions occur.

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

Please note

At Health Orchard, we are committed to providing accurate product information and images. However, manufacturers may update their product packaging or ingredients, and these changes may not be immediately reflected on our website. It's possible for products to be shipped with different packaging than what is shown online. For the most accurate and safe use of any product, we advise reading the product's label, warnings, and instructions rather than relying solely on the details provided by Health Orchard.

Visit the manufacturer's website for more information.

Questions and Answers about 21st Century, Calcium Citrate + D3 Maximum

Have a Question?

Ask a Question
  • What is calcium 500mg and vitamin D3 used for?

    Calcium and vitamin D3 are essential nutrients for maintaining strong, healthy bones. Calcium helps build and maintain bone mass, while vitamin D3 enhances calcium absorption and supports overall bone health.

  • Is it safe to take calcium and vitamin D3 everyday?

    Yes, it is generally safe to take calcium and vitamin D3 supplements daily as directed. However, it's always best to consult with your healthcare provider before starting any new supplement regimen.

  • What are the side effects of taking calcium with vitamin D3?

    Calcium and vitamin D3 supplements are generally well-tolerated, and side effects are rare. However, some people may experience mild digestive issues, such as constipation or gas.

  • What are the benefits of taking vitamin D3 and calcium together?

    Taking vitamin D3 and calcium together helps optimize calcium absorption and utilization in the body, promoting strong, healthy bones and supporting overall skeletal health.

  • What is the best time to take calcium and vitamin D3?

    Calcium and vitamin D3 supplements can be taken at any time of day. However, some people may find it helpful to take them with a meal to improve absorption and reduce the risk of digestive issues.

  • Why can't you take vitamin D and calcium together?

    Vitamin D and calcium can be taken together, and in fact, they work synergistically to support bone health. Vitamin D helps enhance calcium absorption, making it more effective in maintaining strong bones.


The Marketplace not only offers thousands of health supplements, but also allows you to see the prices of those supplements at all major retailers.


The Library will provide articles, guidebooks, and video tutorials from real doctors to help you understand all you need to know about your health supplements.


The Forum allows healthcare professionals and paying users to discuss health and supplements on an organized and user-friendly platform.

Related articles