I’m so pleased that I
"I’m so pleased that I can now take Quercetin, since I’ve reacted to other brands I’ve tried. I have MCAS and I think it’s helping to make me less reactive to foods and chemicals."
Supports cardiometabolic and immune health‡
• Promotes immune support‡
• Supports cardiometabolic health‡
• Supports overall cellular health‡
60 Capsules
FREE SHIPPING (1-4 Business Days)
See final price at checkout.
Pure Encapsulations® products are formulated using high-quality, pure ingredients, FREE FROM unnecessary additives and many common allergens including:
Quercetin, a water-soluble plant pigment (or, flavonoid), is found in plants and foods and cannot be produced in the human body. It is one of the most bioactive flavonoids, helping to support cardiometabolic, cellular and immune health. It is also considered a phytoestrogen.‡
This quercetin supplement also promotes cardiovascular health by protecting lipids from oxidation and supports the health of capillaries by enhancing their strength and integrity.‡
2 capsules, 1-2 times daily. Consumed between meals.
Studies suggest that quercetin may also promote healthy vision. An animal study indicated that quercetin supported prostate cell health by moderating receptor function. Additionally, in vitro studies have reported that this powerful flavonoid may be supportive of colon and breast cell health.‡
Overall rating: 4.939394 / 5 from 165 reviews.
Quercetin by Pure Encapsulations is highly regarded for its immune support, cardiometabolic benefits, and overall cellular health. Customers appreciate its effectiveness, gentle formula, and excellent quality. The brand is trusted for its reliability and trustworthiness, and the product is praised for its fast shipping and great price.
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"I’m so pleased that I can now take Quercetin, since I’ve reacted to other brands I’ve tried. I have MCAS and I think it’s helping to make me less reactive to foods and chemicals."
"I started this supplement in May 2025. It has significantly helped with both my allergy and MCAS issues."
"It saves me on a daily basis as I have severe issues with mold"
"I take this to help prevent histamine reactions from food. I has really helped!"
"Don't just buy some random stuff at the grocery store make sure it's third party tested. For the price you can't beat this kind of quality"
"Game changer for me, more energy and I just feel better overall. Highly recommend 👌"
"Great product and fast shipping. I will continue to purchase. Highly Recommend"
"quality as always"
"Love all supplements from Pure!"
"Yes it is a good product helps with histamine intolerance. Concerned about the shipment of DAO, when will it come?"
We believe every choice you make for your health should be based on expert advice, grounded in science, and personalized to meet your unique needs.