Grape Seed Extract
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne Grape Seed Extract
Optimally absorbed grape seed extract formulated to support blood vessel strength and eye health* Grape Seed Extract is a grape seed phytosome which helps inhibit oxidative damage, protect blood vessels and eye health, and have been shown to reduce swelling and bruising after injury.*
Score Breakdown
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Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Grape Seed PhytosomePhosphatidylcholine complex | 300 mg |
Certifications & Testing
Other Ingredients
Hypromellose Capsule, Leucine, Microcrystalline Cellulose, Silicon Dioxide
Recommended Use
Take 1 capsule two to three times daily or as recommended by your health-care practitioner.
Warnings
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. Grape Seed Extract contains grape seed phytosome - a plant extract complexed with phospholipids, which are derived from soy. Phospholipids contain no soy protein. There are no other soy-based ingredients in Grape Seed Extract. PREGNANCY If pregnant, consult your health-car
Frequently Asked Questions
What is Thorne Grape Seed Extract's Formulate score?
Thorne Grape Seed Extract scores 92 out of 100 (grade A) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne Grape Seed Extract worth it?
Thorne Grape Seed Extract scores 92/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Thorne Grape Seed Extract?
Each serving contains Grape Seed Phytosome (300 mg). Serving size: 1 Capsule. 60 servings per container.
How do I take grape seed extract?
Take 1 capsule two to three times daily or as recommended by your health-care practitioner.
Who makes Grape Seed Extract?
Grape Seed Extract is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Grape Seed Extract third-party tested?
Thorne lists the following certifications and testing for this product: NSF Certified, Gluten Free, Dairy Free, Thorne Verified, Natural Flavors, Natural Colors, GMP Certified.
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