Quercetin + D3
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Vitamin D1526 systematic reviews · 3105 randomised trials | 20 mcg |
| Quercetin42 systematic reviews · 132 randomised trials | 500 mg |
Certifications & Testing
Other Ingredients
Cellulose, Cellulose, Magnesium Stearate, Silica
Recommended Use
Directions: Adults, take one (1) capsule daily, preferably with a fat-containing meal. As a reminder, discuss the supplements and medications that you take with your health care providers.
Warnings
No Yeast, corn or wheat No Soy, milk or salt No Sugar or preservatives No Artificial colors, flavors or sweeteners Caution: If you are pregnant, nursing, or taking medication, have a medical condition or planning surgery, consult a doctor before using this product. Stop using and consult a doctor if any adverse reactions occur. Do not accept if seal is broken. Keep out of the reach of children.
Frequently Asked Questions
What is Country Life Quercetin + D3's Formulate score?
Country Life Quercetin + D3 scores 75 out of 100 (grade B+) 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 Country Life Quercetin + D3 worth it?
Country Life Quercetin + D3 scores 75/100 (grade B+). That's an above-average result — most of its doses and ingredient forms are well-chosen, with only minor gaps in dosing, transparency, or testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Country Life Quercetin + D3?
Each serving contains Vitamin D (20 mcg), Quercetin (500 mg). Serving size: 1 Capsule(s). 90 servings per container.
How do I take quercetin + d3?
Directions: Adults, take one (1) capsule daily, preferably with a fat-containing meal. As a reminder, discuss the supplements and medications that you take with your health care providers.
Who makes Quercetin + D3?
Quercetin + D3 is made by Country Life. See Formulate's full grade and product lineup for Country Life on its brand page.
Is Country Life Quercetin + D3 third-party tested?
Country Life lists the following certifications and testing for this product: Yes Certified gluten-free by GFCO.org, Yes Certified vegetarian by the AVA, Certified gluten-free, Vegetarian, Gluten-Free, Dairy-Free, Sugar-Free.
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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.