Sustained Release Vitamin C With PureWay-C
by Doctor's Best · tablet or pill · 60 tablets
- Off the market since October 2017 (NIH)
- UPC 7 53950 00191 6
- DSLD label 62604
- Serving 1 tablet
- 60 servings
Sustained Release Vitamin C With PureWay-C by Doctor's Best lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 500 mg of vitamin C and 50 mg of citrus bioflavonoids. Its current label entered the NIH Dietary Supplement Label Database on July 25, 2016.
What is in Sustained Release Vitamin C With PureWay-C?
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 Cas Ascorbyl Palmitate, PureWay-CVitamin C (Form: as PureWay-C, and Ascorbyl Palmitate) | 500 mg | 833% | Higher than 81% of 18,583 products listing vitamin C (median 100 mg). |
| Citrus Bioflavonoids | 50 mg | 46% of 2,343 products listing flavonoid give more (median 50 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 62604 (entered July 25, 2016), 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 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.
- PureWay-C Sustained Release Vit. CDoctor's Best · off the market same ingredients
- 12-Hour Vitamin C With PureWay-C 500 mgDoctor's Best · off the market same ingredients
- Super C 500 mgNutri-Rich same ingredients
- C 500 mg with BioflavonoidsNatural Grocers by Vitamin Cottage same ingredients
- Sustained Release Vitamin C with PureWay-C 500 mgDoctor's Best same ingredients
- Vitamin CEveryday Health 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 Adult Use: Take 1 tablet daily. For continuous 24 hour Vitamin C coverage, take one tablet every 12 hours, or as recommended by a nutritionally-informed physician.
- Allergens and what it does not contain
- Non-GMO / Gluten Free
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 62604.
What else is on the label?
Other ingredients: Hydroxypropyl Methylcellulose, Stearic Acid, Silicon Dioxide, Magnesium Stearate.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Vegan.
How many labels does Sustained Release Vitamin C With PureWay-C have?
One label is on file, entered on July 25, 2016.
- Label 62604 (current) Entered July 25, 2016 · off the market October 20, 2017 · 60 tablets · UPC 7 53950 00191 6
DSLD also links this label to: PureWay-C Sustained Release Vit. C (image difference, same product), 12-Hour Vitamin C With PureWay-C 500 mg (image difference, same product), Sustained Release Vitamin C with PureWay-C 500 mg (image difference, same product), Sustained Release Vitamin C with PureWay-C 500 mg (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 Doctor's Best, Inc. (distributor), San Clemente, CA. All Doctor's Best products.