Isotonix · Other Combinations supplement
OPC-3 (Oligomeric Proanthocyanidins)
19 ingredients on file in the NIH Dietary Supplement Label Database. Currently on-market in the U.S.
- 19
- Ingredients
- 8
- Nutrient categories
- Top 17%
- By ingredient count
OPC-3 (Oligomeric Proanthocyanidins) is a other combinations supplement by Isotonix in powder form, listing 19 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
- Powder
- Database Entry Date
- 2024-06-20
- Ingredients
- 19
Supplement Facts (19 Ingredients)
| Ingredient | Group | Amount | % DV |
|---|---|---|---|
| Calories | Header | Not disclosed on label | No DV |
| Total Carbohydrates | Carbohydrate (unspecified) | Not disclosed on label | No DV |
| Total Sugar | Sugar (unspecified) | Not disclosed on label | No DV |
| added Sugars | Sugar (unspecified) | Not disclosed on label | No DV |
| Potassium | Potassium | Not disclosed on label | No DV |
| Grape seed extract | Grape | Not disclosed on label | No DV |
| Red Wine extract | Red Wine | Not disclosed on label | No DV |
| Pycnogenol | maritime Pine | Not disclosed on label | No DV |
| Bilberry extract | bilberry | Not disclosed on label | No DV |
| Citrus Bioflavonoids Complex | Flavonoid (mixture) | Not disclosed on label | No DV |
| Fructose | Fructose | Not disclosed on label | No DV |
| Glucose | Glucose | Not disclosed on label | No DV |
| Citric Acid | Citric Acid | Not disclosed on label | No DV |
| Maltodextrin | Maltodextrin | Not disclosed on label | No DV |
| Silica | Silicon | Not disclosed on label | No DV |
| Calcium Sulfate | Calcium | Not disclosed on label | No DV |
| Food Starch, Modified | modified Starch | Not disclosed on label | No DV |
| Apple Pectin | Pectin | Not disclosed on label | No DV |
| Stearic Acid | Stearic Acid | Not disclosed on label | No DV |
How does OPC-3 (Oligomeric Proanthocyanidins) compare?
Ingredients listed on each label, against the other combinations category average of 21.8. Data from the NIH DSLD.
OPC-3 (Oligomeric Proanthocyanidins) lists 15 ingredients fewer than 1,000 mg Vitamin C Acai Berry. That is 3 below the other combinations average.
What the Label Data Shows
With 19 ingredients on the label, OPC-3 (Oligomeric Proanthocyanidins) is one of the more extensive other combinations supplement formulas from Isotonix in the NIH Dietary Supplement Label Database (DSLD), sold in powder form. These ingredients span 8 nutrient categories, sugar, other, mineral, botanical, and 4 more, reflecting a multi-component formula rather than a single-nutrient product.
Across a broader 19-ingredient formula, 19 of 19 fall outside the FDA's Daily Value system altogether, expected for a broader formula -- the more ingredients a label lists, the more likely it accumulates botanicals, amino acids, or specialty compounds the FDA has never benchmarked.
Availability status shapes how this label record is best used. This product is currently listed as on-market in the DSLD, with its label first entered into the database on 2024-06-20. An on-market listing means the product is currently sold in the United States; the DSLD catalogs the label as submitted but does not independently verify the 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 OPC-3 (Oligomeric Proanthocyanidins): 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 OPC-3 (Oligomeric Proanthocyanidins)? ▼
Who manufactures OPC-3 (Oligomeric Proanthocyanidins)? ▼
Is OPC-3 (Oligomeric Proanthocyanidins) still available for purchase? ▼
What is the serving size of OPC-3 (Oligomeric Proanthocyanidins)? ▼
What type of supplement is OPC-3 (Oligomeric Proanthocyanidins)? ▼
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.