Natural Factors · Other Combinations supplement
C Extra 500 mg Plus 500 mg Bioflavonoids
9 ingredients on file in the NIH Dietary Supplement Label Database. Currently on-market in the U.S.
- 9
- Ingredients
- 6
- Nutrient categories
- Top 47%
- By ingredient count
C Extra 500 mg Plus 500 mg Bioflavonoids is a other combinations supplement by Natural Factors in tablet or pill form, listing 9 ingredients in the NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. Currently listed as on-market. Daily Value percentages shown below are based on FDA reference daily intake amounts for adults.
Product Details
- Type
- 🔬 Other Combinations
- Form
- Tablet or Pill
- Database Entry Date
- 2012-04-26
- Ingredients
- 9
Supplement Facts (9 Ingredients)
| Ingredient | Group | Amount | % DV |
|---|---|---|---|
| Vitamin C | Vitamin C | Not disclosed on label | No DV |
| Citrus Bioflavonoids | Flavonoid (mixture) | Not disclosed on label | No DV |
| Rutin | Rutin | Not disclosed on label | No DV |
| Rosehips | Rose (unspecified) | Not disclosed on label | No DV |
| Hesperidin Bioflavonoids | Hesperidin | Not disclosed on label | No DV |
| Di-Calcium Phosphate | Calcium | Not disclosed on label | No DV |
| Lactose | Lactose | Not disclosed on label | No DV |
| Croscarmellose Sodium | Croscarmellose Sodium | Not disclosed on label | No DV |
| Magnesium Stearate | Magnesium stearate | Not disclosed on label | No DV |
How does C Extra 500 mg Plus 500 mg Bioflavonoids compare?
Ingredients listed on each label, against the other combinations category average of 21.8. Data from the NIH DSLD.
C Extra 500 mg Plus 500 mg Bioflavonoids lists 25 ingredients fewer than 1,000 mg Vitamin C Acai Berry. That is 13 below the other combinations average.
What the Label Data Shows
C Extra 500 mg Plus 500 mg Bioflavonoids is cataloged in the NIH Dietary Supplement Label Database (DSLD) as a other combinations supplement built from 9 ingredients from Natural Factors, sold in tablet or pill form. These ingredients span 6 nutrient categories, non-nutrient/non-botanical, other, vitamin, botanical, and 2 more, reflecting a multi-component formula rather than a single-nutrient product.
Across a broader 9-ingredient formula, 9 of 9 sit outside the FDA's reference-intake system entirely -- common at this scale, since multi-ingredient blends tend to accumulate botanicals, amino acids, and specialty compounds the FDA has never benchmarked. That's expected breadth, not a red flag on its own.
Market status matters for supplement research. This product is currently listed as on-market in the DSLD, with its label first entered into the database on 2012-04-26. On-market products are currently being distributed in the United States, though the DSLD does not verify the accuracy of label claims or evaluate safety or efficacy.
About the DSLD database
The DSLD is a label database, not an FDA approval list, under the 1994 DSHEA framework, dietary supplements do not require pre-market approval, and label information reflects what manufacturers self-declare rather than independent laboratory verification. This page presents factual label data for reference only and is not medical advice; consult a licensed healthcare provider before making decisions about any supplement.
Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD) Supplement label data for C Extra 500 mg Plus 500 mg Bioflavonoids: ingredients, % Daily Value, market status, brand · 2026 DSLD captures manufacturer-self-declared label information; the NIH does not verify accuracy or evaluate safety/efficacy. Dietary supplements are regulated under DSHEA 1994, no pre-market FDA approval is required.
Ingredient Breakdown by Category
Daily Value Coverage
Frequently Asked Questions
What ingredients are in C Extra 500 mg Plus 500 mg Bioflavonoids? ▼
Who manufactures C Extra 500 mg Plus 500 mg Bioflavonoids? ▼
Is C Extra 500 mg Plus 500 mg Bioflavonoids still available for purchase? ▼
What is the serving size of C Extra 500 mg Plus 500 mg Bioflavonoids? ▼
What type of supplement is C Extra 500 mg Plus 500 mg Bioflavonoids? ▼
Data Sources & Methodology
Data as of 2025. Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD).
Supplement label data sourced from the Source: NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. The DSLD contains label information from dietary supplement products marketed in the United States.
Daily Value (DV) percentages are based on Source: FDA 21 CFR 101.9 Reference Daily Intake (RDI) values for adults. Products marked "Off Market" may no longer be available for purchase but their label data remains in the database for reference.
Disclaimer, Not Medical Advice
Label data from the Source: NIH Dietary Supplement Label Database (DSLD). This information is for educational and reference purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting, stopping, or combining any dietary supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.
Read our methodology , how this data is sourced, computed, and verified.
Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. This page draws directly on the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.