Sustained Release C-Ascorbs
by Natures Plus · tablet or pill · 180 tablets
- Off the market since February 2022 (NIH)
- UPC 0 97467 03691 8
- DSLD label 199509
- Serving 4 tablets
- 45 servings
Sustained Release C-Ascorbs by Natures Plus lists 7 ingredients, 7 with an amount per serving of 4 tablets, such as 4,000 mg of vitamin C, 212 mg of calcium, 108 mg of magnesium and 10 mg of zinc, beside 2 Nutrition Facts rows (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on February 25, 2019.
What is in Sustained Release C-Ascorbs?
Each row as the label prints it, per serving of 4 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 |
|---|---|---|---|
| Carbohydrates | 1 g | 1% | 74% of 21,979 products listing carbohydrate give more (median 3 g). |
| Dietary Fiber | 1 g | 4% | 56% of 6,987 products listing fiber give more (median 2 g). |
| Vitamin Cas Mineral AscorbatesVitamin C (Form: as Mineral Ascorbate) | 4,000 mg | 6,667% | This amount is far outside what other labels list for vitamin C, or disagrees with the label's own %DV: possibly a unit or transcription slip in the database. Check the label image on DSLD. |
| Calciumas Calcium AscorbateCalcium (Form: as Calcium Ascorbate) | 212 mg | 21% | Higher than 70% of 17,831 products listing calcium (median 115 mg). |
| Magnesiumas Magnesium AscorbateMagnesium (Form: as Magnesium Ascorbate) | 108 mg | 27% | Higher than 63% of 14,003 products listing magnesium (median 86 mg). |
| Zincas Zinc AscorbateZinc (Form: as Zinc Ascorbate) | 10 mg | 67% | 51% of 13,186 products listing zinc give more (median 11 mg). |
| Manganeseas Manganese AscorbateManganese (Form: as Manganese Ascorbate) | 0.4 mg | 20% | 91% of 7,016 products listing manganese give more (median 2 mg). |
| Potassiumas Potassium AscorbatePotassium (Form: as Potassium Ascorbate) | 240 mg | 7% | Higher than 83% of 11,614 products listing potassium (median 99 mg). |
| Lemon Bioflavonoidsas active Flavanones, Flavones and related Phenolic compounds, FlavonolsLemon Bioflavonoids (Form: supplying 48% active Flavanones Note: 192 mg, and 2% Flavonols Note: 8 mg, Flavones and related Phenolic compounds) | 400 mg | Higher than 93% of 2,343 products listing flavonoid (median 50 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 199509 (entered February 25, 2019), 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:
- 91% of the 7,016 products that print an amount of manganese list more than its 0.4 mg of manganese (median 2 mg).
- Its 400 mg of lemon bioflavonoids (filed by NIH under flavonoid) is higher than 93% of the 2,343 flavonoid products that print an amount; 139 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?
The products whose ingredient lists overlap most with Sustained Release C-Ascorbs's, rare ingredients counting for more.
- Super C CapsAB American Biologics 7 shared, 80% alike
- DaVinci Poten-CDaVinci Laboratories of Vermont 7 shared, 65% alike
- DaVinci Poten-C 500DaVinci Laboratories of Vermont · off the market 7 shared, 65% alike
- DaVinci Poten-C 500DaVinci Laboratories 7 shared, 65% alike
- Power C-BufferedDr. Seth's Vitamin Vibrations 7 shared, 65% alike
- C-Plex PowderDouglas Laboratories 8 shared, 64% 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: As a dietary supplement, four tablets once daily.
- Warnings
- Keep out of reach of children.
- Allergens and what it does not contain
- Free from artificial colors and preservatives. Free from the common allergens yeast, wheat, soy and milk.
- Storage
- Keep tightly closed in a cool, dry place.
Source: label statements in DSLD label 199509.
What else is on the label?
Other ingredients: Microcrystalline Cellulose, Hydroxypropyl Methylcellulose, Stearic Acid, Di-Calcium Phosphate, Magnesium Stearate, Silica, Pharmaceutical Glaze.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Hypo-Allergenic; Gluten Free; Quality Natural Supplements.
How many labels does Sustained Release C-Ascorbs have?
3 labels are on file under this name since October 25, 2012: other sizes, label designs and reformulations. The current one leads this page.
- Label 199509 (current) Entered February 25, 2019 · off the market February 28, 2022 · 180 tablets · UPC 0 97467 03691 8
- Label 49367 Entered August 25, 2015 · off the market February 28, 2022 · 180 tablets · UPC 0 97467 03691 8
- Label 13064 Entered October 25, 2012 · off the market February 28, 2022 · 90 tablets · UPC 0 97467 03690 1
DSLD also links this label to: C-Ascorbs Sustained Release (image difference, same product), C-Ascorbs Sustained Release (package size 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 Natural Organics Laboratories, Inc. makers of Nature's Plus (manufacturer), Amityville, New York. All Natures Plus products.