C 1000 mg
by Kirkland Signature · tablet or pill · 500 tablets
- On the market (NIH)
- UPC 0 96619 98268 4
- DSLD label 278462
- Serving 1 tablet
- 500 servings
C 1000 mg by Kirkland Signature lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 1,000 mg of vitamin C and 100 mg of citrus bioflavonoid complex. Its current label entered the NIH Dietary Supplement Label Database on December 13, 2022.
What is in C 1000 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin C | 1,000 mg | 1,111% | Higher than 91% of 18,583 products listing vitamin C (median 100 mg). |
| Citrus Bioflavonoid Complexas Hesperidin, Rutin10% (10mg) Hesperidin and Rutin | 100 mg | Higher than 62% of 2,343 products listing flavonoid (median 50 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 278462 (entered December 13, 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 1,000 mg of vitamin C is higher than 91% of the 18,583 vitamin C products that print an amount; 445 list more.
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.
- Vitamin C with BioflavonoidsBronson Laboratories · off the market same ingredients
- Vitamin C With Citrus Bioflavonoids 1000 mgNature's Harmony same ingredients
- Vitamin C 1000 mg Plus Citrus BioflavonoidsQuest · off the market same ingredients
- Supreme CPureFormulas same ingredients
- Natural C 1000 mgDouglas Laboratories same ingredients
- Natural Vitamin C 1,000 mgCooper Complete · off the market 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
- Suggested Use: Adults - Take one (1) tablet daily with food as a dietary supplement.
- Warnings
- Caution: Pregnant or nursing women, individuals taking medication(s) or persons who have a health condition should consult their physician before using this product.
- Keep out of the reach of children.
- Vitamin Infoline 1-800-428-8048 Important: Tamper-evident seal under cap. Do not use if printed seal is broken or missing.
- Allergens and what it does not contain
- No artificial colors or flavors No gluten No lactose
- Storage
- Store at 15 degrees - 30 degrees C (59 degrees - 86 degrees F).
Source: label statements in DSLD label 278462.
What else is on the label?
Other ingredients: Ascorbic Acid, Microcrystalline Cellulose, Maltodextrin, Croscarmellose Sodium, Citrus Bioflavonoid Complex, Magnesium Stearate, Guar Gum, Palm Oil, Rose Hips, Silicon Dioxide, Stearic Acid, Sunflower Lecithin.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): USP Dietary Supplement Verified. Listed with: USP Verified mark (a seal is the label's claim; the certifier's own list confirms it).
How many labels does C 1000 mg have?
One label is on file, entered on December 13, 2022.
- Label 278462 (current) Entered December 13, 2022 · on the market · 500 tablets · UPC 0 96619 98268 4
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Costco Wholesale Corporation (distributor), Seattle, WA. All Kirkland Signature products.