Quercetin Phytosome
Scored by the Formulate Research Team · Last reviewed July 2026
Overview: Thorne Quercetin Phytosome
Give your immune system an advantage with the optimized, plant-based antioxidant support of quercetin* As a powerhouse antioxidant, Quercetin Phytosome benefits an optimized immune response, offers support for allergy sufferers, and promotes a healthy aging process for well-rounded daily wellness support.*
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Quercetin PhytosomePhospholipid complex from Sunflower42 systematic reviews · 132 randomised trials | 750 mg |
Certifications & Testing
Other Ingredients
Hypromellose (derived from cellulose) capsule, Leucine, Microcrystalline Cellulose, Silicon Dioxide
Recommended Use
Take 1 capsule two to three times daily with meals 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. PREGNANCY If pregnant, consult your health-care practitioner before using this product. INTERACTIONS There are no known adverse interactions or contraindications at publication date.
Frequently Asked Questions
What is Thorne Quercetin Phytosome's Formulate score?
Thorne Quercetin Phytosome 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 Quercetin Phytosome worth it?
Thorne Quercetin Phytosome 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 Quercetin Phytosome?
Each serving contains Quercetin Phytosome (750 mg). Serving size: 1 Capsule. 60 servings per container.
How do I take quercetin phytosome?
Take 1 capsule two to three times daily with meals or as recommended by your health-care practitioner.
Who makes Quercetin Phytosome?
Quercetin Phytosome is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Quercetin Phytosome third-party tested?
Thorne lists the following certifications and testing for this product: NSF Certified, Gluten Free, Dairy Free, Soy Free, Thorne Verified, Natural Flavors, Natural Colors, GMP Certified.
Related Supplements
Track quercetin phytosome in your stack
Build a personalized supplement stack free in your browser — no install. Flag dose overlaps and interactions, and keep every product scored against the latest evidence.
Is Quercetin Phytosome right for your goals?
Two questions, then every ingredient graded against what you're actually trying to do — plus what it costs per effective dose.
Build my stack2 questions · free · no account needed to start
Also on iPhone — get the free app
Evidence-based supplement guides, no spam
We send a short digest when new guides drop — nothing else. No affiliate pushes, no sponsored content, unsubscribe anytime.
Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.