Ester-C & flavonoids
Scored by the Formulate Research Team · Last reviewed July 2026
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 |
|---|---|
| Vitamin C289 systematic reviews · 808 randomised trials | 619 mg |
| Calcium702 systematic reviews · 3290 randomised trials | 68 mg |
| Threonic Acid | 7 mg |
| Quercetin42 systematic reviews · 132 randomised trials | 50 mg |
| Rutin | 100 mg |
Certifications & Testing
Other Ingredients
Cellulose, Water, Ascorbyl Palmitate
Recommended Use
Recommendations: As a dietary supplement, take 1 capsule, 1-2 times daily, with or between meals.
Warnings
Warning: If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use. Keep out of the reach of children. Use only if safety seal is intact. Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity.
Frequently Asked Questions
What is Pure Encapsulations Ester-C & flavonoids's Formulate score?
Pure Encapsulations Ester-C & flavonoids scores 81 out of 100 (grade A-) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Pure Encapsulations Ester-C & flavonoids worth it?
Pure Encapsulations Ester-C & flavonoids scores 81/100 (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 Pure Encapsulations Ester-C & flavonoids?
Each serving contains Vitamin C (619 mg), Calcium (68 mg), Threonic Acid (7 mg), Quercetin (50 mg), and more. Serving size: 1 Capsule(s). 180 servings per container.
How do I take ester-c & flavonoids?
Recommendations: As a dietary supplement, take 1 capsule, 1-2 times daily, with or between meals.
Who makes Ester-C & flavonoids?
Ester-C & flavonoids is made by Pure Encapsulations. See Formulate's full grade and product lineup for Pure Encapsulations on its brand page.
Is Pure Encapsulations Ester-C & flavonoids third-party tested?
Pure Encapsulations lists the following certifications and testing for this product: Dairy-Free, Gluten-Free, Non-GMO, Soy-Free, Vegan, Vegetarian, cGMP Certified, Third-Party Tested.
Related Supplements
Track ester-c & flavonoids 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 Ester-C & flavonoids 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.