PlainVitamins

Oyster Shell Calcium 500 mg

by Nature's Blend · tablet or pill · 200 tablets

  • On the market (NIH)
  • UPC 0 79854 03163 8
  • DSLD label 314613
  • Serving 1 tablet
  • 200 servings

Oyster Shell Calcium 500 mg by Nature's Blend lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 10 mcg (400 IU) of vitamin D3 and 500 mg of calcium. Its current label entered the NIH Dietary Supplement Label Database on September 25, 2024.

What is in Oyster Shell Calcium 500 mg?

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).

Oyster Shell Calcium 500 mg: Supplement Facts rows against the market (DSLD label 314613, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin D3as Cholecalciferol10 mcg (400 IU)50%Vitamin D in Oyster Shell Calcium 500 mg against 14,175 products10 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg10 mcg

57% of 14,175 products listing vitamin D give more (median 15 mcg).

Calciumas Oyster Shell500 mg38%Calcium in Oyster Shell Calcium 500 mg against 17,831 products500 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg500 mg

Higher than 85% of 17,831 products listing calcium (median 115 mg).

Source: NIH ODS Dietary Supplement Label Database, label 314613 (entered September 25, 2024), version 9.4.0. See the label on DSLD or its label image (PDF). 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 one serving 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.

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 dietary supplement, take one tablet daily, preferably with a meal or as directed by your healthcare professional.
Warnings
Keep out of the reach of children.
Double safety sealed for your protection. Do not use if either seal is broken or missing.
Warning: Consuming this product can expose you to lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food.
Allergens and what it does not contain
Gluten free. No preservatives, artificial flavors, wheat, yeast, or corn added.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 314613.

What else is on the label?

Other ingredients: Calcium Carbonate, Modified Cellulose, Maltodextrin, Acacia Gum, Croscarmellose Sodium, Magnesium Stearate, Triacetin, Polydextrose, Titanium Dioxide, Silicon Dioxide, Starch, Medium Chain Triglyceride, Calcium Phosphate, DL-Alpha-Tocopherol, Blue #1 Lake, Riboflavin.

How many labels does Oyster Shell Calcium 500 mg have?

3 labels are on file under this name since May 23, 2024: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 314613 (current) Entered September 25, 2024 · on the market · 200 tablets · UPC 0 79854 03163 8
  2. Label 310416 Entered May 23, 2024 · on the market · 200 tablets · UPC 0 79854 00715 2
  3. Label 310361 Entered May 23, 2024 · on the market · 30 tablets · UPC 0 79854 03037 2

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names National Vitamin Company (manufacturer), Casa Grande, AZ. All Nature's Blend products.

Where next?