Isotonix OPC-3 Antioxidant Supplement - Pycnogenol, Grape Seed Extracts, Bilberry, Red Wine & Pine Bark Extracts - for Heart & Circulatory Support - Isotonic, Vegan, Gluten Free - 90 Servings Review
Our verdict
A premium-priced isotonic powder blend combining several plant extracts, positioned above most of the capsule and softgel products in this category.
Check price on AmazonBest for
Shoppers who prefer a mixable powder over pills and want a formula that combines several plant extracts in one serving.
Skip if
You are on a tight budget or prefer a simple capsule or softgel rather than a powder you mix into liquid.
- Form Powder
- Count 10.6 Ounce
- Flavor Grape
- Type Grape Seed Extracts
- Diet Gluten Free
- Allergens Dairy Free, Gluten Free
- Priced 224% above the category median ($24.99 across 61 tracked models)
Pros
- Combines four plant extracts (grape seed, bilberry, red wine, pine bark) in one powder
- Isotonic powder format is an alternative for those who dislike swallowing pills
- Vegan and gluten-free labeling
- Solid 4.6 average rating across over 1,200 reviews
Cons
- Notably higher price than most other combination antioxidant products in this category
- Powder format requires mixing rather than a grab-and-go pill
- Grape flavor is fixed, with no unflavored option listed
Our scorecard
-
Owner rating4.6/5
4.6 average across 1,245 owner ratings
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Popularity3.0/5
1,245 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other home health monitors: bathroom scales, blood pressure monitors, pregnancy and ovulation tests, thermometers, body composition monitors, stethoscopes, glucose monitors and pulse oximeters we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
Isotonix OPC-3 stands apart from most of the other products in this roundup because it is a powder designed to be mixed into an isotonic solution rather than swallowed as a pill. The formula combines grape seed extract with bilberry, red wine, and pine bark extracts, positioned by the manufacturer around heart and circulatory support. Each container is sized for 10.6 ounces and stated to provide 90 servings.
At just under $81, this is priced well above most tart cherry and single-ingredient antioxidant products in this category, which reflects both the isotonic delivery format and the multi-ingredient blend. The grape flavor is a defining feature since it is meant to be dissolved rather than swallowed whole, which is a different daily habit than popping a capsule.
The listing notes the product is vegan and gluten-free. As with any combination supplement, the maker's claims around heart and circulatory support are framed as general wellness marketing rather than medical claims, and anyone with heart-related concerns should talk with a healthcare professional before adding a new supplement to their routine.
Specifications
| Form | Powder |
|---|---|
| Count | 10.6 Ounce |
| Flavor | Grape |
| Type | Grape Seed Extracts |
| Diet | Gluten Free |
| Allergens | Dairy Free, Gluten Free |
Performance notes
The powder ships in a 10.6-ounce container providing 90 servings, and the isotonic mixing method is the main format difference versus the capsule and softgel products elsewhere in this list. The grape flavor is built into the formula since it is meant to be dissolved into liquid rather than swallowed whole.
What buyers say
Reviews average 4.6 stars across roughly 1,245 ratings, a solid result though a smaller sample than some of the higher-volume tart cherry products in the same category.
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Frequently asked questions
How is this product used?
It is a powder meant to be mixed into an isotonic solution rather than a capsule or softgel you swallow whole, following the mixing directions on the label.
What ingredients does OPC-3 combine?
The maker markets it as a blend of grape seed extract, bilberry, red wine extract, and pine bark extract in one formula.
Is this a vegan and gluten-free product?
Yes, the label lists it as vegan and gluten-free, and it is also noted as dairy-free.