PlainVitamins

C-D-Zinc

by Douglas Laboratories · capsule · 120 vegetarian capsules

  • On the market (NIH)
  • UPC 3 10539 97976 1
  • DSLD label 261874
  • Serving 1 vegetarian capsule
  • 120 servings

C-D-Zinc by Douglas Laboratories lists 3 ingredients, 3 with an amount per serving of 1 vegetarian capsule, such as 800 mg of vitamin C, 25 mcg (1,000 IU) of vitamin D3 and 15 mg of zinc. Its current label entered the NIH Dietary Supplement Label Database on May 19, 2022.

What is in C-D-Zinc?

Each row as the label prints it, per serving of 1 vegetarian capsule. 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).

C-D-Zinc: Supplement Facts rows against the market (DSLD label 261874, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid800 mg889%Vitamin C in C-D-Zinc against 18,583 products800 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg800 mg

Higher than 90% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 1,600 mg.

Vitamin D3as Cholecalciferol1,000 IU25 mcg (1,000 IU)125%Vitamin D in C-D-Zinc against 14,175 products25 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg25 mcg

Higher than 59% of 14,175 products listing vitamin D (median 15 mcg). Per day at the most servings: 50 mcg.

Zincas OptiZinc Zinc Monomethionine15 mg136%Zinc in C-D-Zinc against 13,186 products15 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg15 mg

Higher than 56% of 13,186 products listing zinc (median 11 mg). Per day at the most servings: 30 mg.

Source: NIH ODS Dietary Supplement Label Database, label 261874 (entered May 19, 2022), 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?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • Its 800 mg of vitamin C is higher than 90% of the 18,583 vitamin C products that print an amount; 1,770 list more.

The NIH database records 1 to 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.

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
Suggested Use: As a dietary supplement, adults take 1 capsule, 1-2 times daily with food or as directed by a health professional.
Warnings
Warning: If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product.
Keep out of the reach of children.
Use only if safety seal is intact.
Allergens and what it does not contain
Gluten-free, Non-GMO
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 261874.

What else is on the label?

Other ingredients: Hydroxypropyl Methylcellulose, Ascorbyl Palmitate.

How many labels does C-D-Zinc have?

2 labels are on file under this name since April 22, 2021: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 261874 (current) Entered May 19, 2022 · on the market · 120 vegetarian capsules · UPC 3 10539 97976 1
  2. Label 244794 Entered April 22, 2021 · on the market · 60 vegetarian capsules · UPC 3 10539 97962 4

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

Who makes it?

The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.

Where next?