Calcium 500 + D3
by 21st Century · tablet or pill · 400 tablets
- On the market (NIH)
- UPC 7 40985 27522 1
- DSLD label 258367
- Serving 1 tablet
- 400 servings
Calcium 500 + D3 by 21st Century lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 15 mcg (600 IU) of vitamin D3 and 500 mg of calcium. Its current label entered the NIH Dietary Supplement Label Database on October 22, 2021.
What is in Calcium 500 + D3?
Each row as the label prints it, per serving of 1 tablet. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin D3as CholecalciferolVitamin D3 (Alt. Name: Cholecalciferol) Note: 600 IU | 15 mcg (600 IU) | 75% | 51% of 14,175 products listing vitamin D give more (median 15 mcg). Per day at the most servings: 30 mcg. |
| Calciumas OysterCalcium (Form: from Oyster PlantPart: shell) | 500 mg | 38% | Higher than 85% of 17,831 products listing calcium (median 115 mg). Per day at the most servings: 1,000 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 258367 (entered October 22, 2021), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records 2 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
6 products list the very same ingredients; the nearest amounts come first.
- Chewable Calcium 500 mg & D3Windmill · off the market same ingredients
- Chewable Calcium 500 mg with Vitamin D3Windmill Natural Vitamins same ingredients
- Os-Cal Chewable Vitamin D3 500 mg Calcium 600 IU Vitamin D3GlaxoSmithKline same ingredients
- Os-Cal Extra D3 with Vitamin D3 500 mg Calcium 600 IU Vitamin D3GlaxoSmithKline same ingredients
- Oysco Chewable 500+DRugby same ingredients
- Calcium 500 + D3 Plus Extra D321st Century same ingredients
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Directions: As a calcium supplement, take one (1) tablet with any meal, twice daily or as directed by a healthcare provider. Do not exceed recommended dosage.
- Warnings
- Contains shellfish (oyster).
- Do not exceed recommended dosage.
- Warning: Consult a healthcare provider prior to use if pregnant, nursing, on medications, have a medical condition or are planning a 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.
- Allergens and what it does not contain
- No added yeast or artificial flavors. Gluten Free.
- Storage
- Store at room temperature.
Source: label statements in DSLD label 258367.
What else is on the label?
Other ingredients: Maltodextrin, Croscarmellose Sodium, Cellulose, Contains <2% of.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Guaranteed quality Laboratory tested.
How many labels does Calcium 500 + D3 have?
6 labels are on file under this name since March 25, 2015: other sizes, label designs and reformulations. The current one leads this page.
- Label 258367 (current) Entered October 22, 2021 · on the market · 400 tablets · UPC 7 40985 27522 1
- Label 258366 Entered October 22, 2021 · on the market · 90 tablets · UPC 7 40985 27519 1
- Label 233397 Entered August 23, 2020 · off the market August 5, 2020 · 400 tablets · UPC 7 40985 27523 8
- Label 233394 Entered August 23, 2020 · off the market August 6, 2021 · 90 tablets · UPC 7 40985 27519 1
- Label 43590 Entered March 25, 2015 · off the market June 28, 2019 · 400 tablets · UPC 7 40985 27523 8
- Label 43588 Entered March 25, 2015 · off the market June 28, 2019 · 90 tablets · UPC 7 40985 27516 0
DSLD also links this label to: Calcium 500+D3 (package size difference, same product), Calcium 500+D3 (package size difference, same product), Calcium 500+D3 (image difference, same product), Calcium 500+D3 (package size difference, same product), Calcium 500+D3 (image difference, same product).
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names 21st Century HealthCare, Inc. (manufacturer), Tempe, AZ. All 21st Century products.