Poly C
by USANA · tablet or pill
- On the market (NIH)
- DSLD label 12946
- Serving 2 tablets
Poly C by USANA lists 4 ingredients, 4 with an amount per serving of 2 tablets, such as 1,200 mg of vitamin C, 130 mg of citrus bioflavonoids, 14 mg of rutin and 6 mg of quercetin. Its current label entered the NIH Dietary Supplement Label Database on October 1, 2012.
What is in Poly C?
Each row as the label prints it, per serving of 2 tablets. 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 Cas Calcium Ascorbate, Magnesium Ascorbate, Potassium AscorbateVitamin C (Form: as Calcium Ascorbate, Potassium Ascorbate, Magnesium Ascorbate, and Zinc Ascorbate) | 1,200 mg | 2,000% | Higher than 98% of 18,583 products listing vitamin C (median 100 mg). |
| Citrus Bioflavonoids | 130 mg | Higher than 81% of 2,343 products listing flavonoid (median 50 mg). | |
| Rutin | 14 mg | 69% of 1,232 products listing rutin give more (median 25 mg). | |
| Quercetin | 6 mg | 95% of 1,548 products listing quercetin give more (median 100 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 12946 (entered October 1, 2012), 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?
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 1,200 mg of vitamin C is higher than 98% of the 18,583 vitamin C products that print an amount; 299 list more.
- 95% of the 1,548 products that print an amount of quercetin list more than its 6 mg of quercetin (median 100 mg).
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?
The products whose ingredient lists overlap most with Poly C's, rare ingredients counting for more.
- Bioflavonoid ComplexKlaire Labs 3 shared, 87% alike
- Stellar CDesigns for Health 4 shared, 75% alike
- Vitamin C ComplexBronson Laboratories · off the market 3 shared, 72% alike
- Ultra-CDouglas Laboratories 3 shared, 72% alike
- C-1000 CapsPhysician's Preference · off the market 3 shared, 72% alike
- C-1000 Caps With 100 mg Of BioflavonoidsNOW · off the market 3 shared, 72% alike
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: TAKE TWO (2) TABLETS DAILY, OR AS YOUR PERSONAL NEEDS REQUIRE.
Source: label statements in DSLD label 12946.
What else is on the label?
Other ingredients: Microcrystalline Cellulose, pregelatinized Starch, Ascorbyl Palmitate, Hydroxypropyl Methylcellulose, Silicon Dioxide, Colloidal.
How many labels does Poly C have?
One label is on file, entered on October 1, 2012.
- Label 12946 (current) Entered October 1, 2012 · on the market
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names USANA Health Sciences, Inc. (manufacturer), Salt Lake City, UT. All USANA products.