Product details
Quercetin 500 provides the unique benefits of one of nature’s most powerful protective molecules. Like so many of nature’s most beneficial plant-based compounds, quercetin is a polyphenol and flavonoid. In fact, flavonoid polyphenols are the beneficial compounds that make many healthy foods so healthy, such as green tea, red wine and chocolate.
Quercetin is uniquely abundant in capers, red onions and cilantro, but also rich in many other healthy foods. Quercetin has long been the subject of extensive research validating its protective benefits to diverse systems in the body.
Quercetin is well known for its benefits promoting healthy circulation and supporting the structure of our blood vessels, veins and capillaries. More recently, quercetin has been recognized for its supportive benefits to the cardiopulmonary system, including the fragile tissues of both the heart and lungs.
Quercetin has also been shown to support immune system function, as well as the normally problematic aging prostate gland. Quercetin’s impressive body of research has made it a popular ingredient in nutritional supplements; however, its benefits are limited due to its extremely poor absorption.
We overcome these absorptive challenges by complexing quercetin with phosphatidyl choline (PC), which is the predominant phospholipid found in the brain and liver. This unique phospholipid complex protects quercetin from digestive damage while also dramatically increasing its absorption. This natural combination of quercetin with PC ensures you receive all the remarkable benefits of this extraordinary natural molecule.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Key benefits
A Quercetin Supplement Built for Absorption
Quercetin 500 delivers 235 mg of quercetin, from a 500 mg quercetin phospholipid complex, in one vegetarian capsule a day. On its own, quercetin dissolves poorly in water, which limits how much the body absorbs. Binding it to phospholipids helps quercetin move through the watery digestive tract and cross the fatty membranes of the cells lining the intestine.
Supports Healthy Blood Vessels and Circulation
Quercetin is a flavonoid, a plant compound found in many fruits and vegetables, including onions, apples, and berries. Flavonoids are studied for their role in keeping the walls of arteries, veins, and capillaries normal and healthy. Each capsule supplies quercetin with 25 mg of vitamin C (28% DV), which the body needs to make collagen, a structural protein in blood vessel walls, and which also helps regenerate quercetin’s antioxidant activity. Together, they help maintain healthy circulation.
Helps Protect Cells from Oxidative Stress
Quercetin is a polyphenol with a structure that readily gives up electrons, making it an effective antioxidant and one of the most studied plant antioxidants. It works alongside vitamin C, the body’s main water-soluble antioxidant, which helps protect cells from oxidative stress.
Supports Normal Immune Function
Vitamin C builds up in white blood cells, which hold it at many times the concentration found in the blood, and it plays a role in their normal function. Each capsule provides 25 mg of vitamin C (28% DV). Quercetin works alongside vitamin C to help support a healthy immune response.
Suggested use
Consume one capsule daily. You can increase your intake as required or as guided by your physician.
How it's made
Every ProCaps Laboratories product is formulated and made entirely by us, in our own facility — never outsourced to contract manufacturers.
We invest in making our own products because we prioritize quality and integrity over convenience.
In our formulations, ingredients are selected for their relevance, compatibility and effectiveness — not because they're popular or easy to sell.
We source the highest-quality raw materials, prioritizing the most bioavailable forms that are relevant.
Products are made in our 100% solar-powered facility under precise and controlled cGMP manufacturing processes, conducting in-house testing and verification of purity and potency throughout every step of production.
That's the ProCaps Promise: pure, science-driven and made with integrity by us for you.
Learn more about our commitment to quality.
Ingredients
(Quercetin, 80% phospholipids and 20% dihydrate)
* Percent Daily Values (% DV). † Daily Value not established.
Other Ingredients: Natural plant cellulose vegetarian capsule
Quercetin 500
Circulatory & Vascular Support • Immune Health
One of nature's most powerful protective molecules, quercetin is a flavonoid polyphenol long recognized for its protective benefits, including supporting healthy circulation and support the structure of blood vessels, veins, and capillaries. It also offers supportive benefits to the cardiopulmonary, immune system and the prostate gland. Our quercetin is complexed with phosphatidyl choline to support its absorption, ensuring you receive the full benefits of this remarkable natural molecule.
Size: 30 servings
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Product details
Quercetin 500 provides the unique benefits of one of nature’s most powerful protective molecules. Like so many of nature’s most beneficial plant-based compounds, quercetin is a polyphenol and flavonoid. In fact, flavonoid polyphenols are the beneficial compounds that make many healthy foods so healthy, such as green tea, red wine and chocolate.
Quercetin is uniquely abundant in capers, red onions and cilantro, but also rich in many other healthy foods. Quercetin has long been the subject of extensive research validating its protective benefits to diverse systems in the body.
Quercetin is well known for its benefits promoting healthy circulation and supporting the structure of our blood vessels, veins and capillaries. More recently, quercetin has been recognized for its supportive benefits to the cardiopulmonary system, including the fragile tissues of both the heart and lungs.
Quercetin has also been shown to support immune system function, as well as the normally problematic aging prostate gland. Quercetin’s impressive body of research has made it a popular ingredient in nutritional supplements; however, its benefits are limited due to its extremely poor absorption.
We overcome these absorptive challenges by complexing quercetin with phosphatidyl choline (PC), which is the predominant phospholipid found in the brain and liver. This unique phospholipid complex protects quercetin from digestive damage while also dramatically increasing its absorption. This natural combination of quercetin with PC ensures you receive all the remarkable benefits of this extraordinary natural molecule.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Key benefits
A Quercetin Supplement Built for Absorption
Quercetin 500 delivers 235 mg of quercetin, from a 500 mg quercetin phospholipid complex, in one vegetarian capsule a day. On its own, quercetin dissolves poorly in water, which limits how much the body absorbs. Binding it to phospholipids helps quercetin move through the watery digestive tract and cross the fatty membranes of the cells lining the intestine.
Supports Healthy Blood Vessels and Circulation
Quercetin is a flavonoid, a plant compound found in many fruits and vegetables, including onions, apples, and berries. Flavonoids are studied for their role in keeping the walls of arteries, veins, and capillaries normal and healthy. Each capsule supplies quercetin with 25 mg of vitamin C (28% DV), which the body needs to make collagen, a structural protein in blood vessel walls, and which also helps regenerate quercetin’s antioxidant activity. Together, they help maintain healthy circulation.
Helps Protect Cells from Oxidative Stress
Quercetin is a polyphenol with a structure that readily gives up electrons, making it an effective antioxidant and one of the most studied plant antioxidants. It works alongside vitamin C, the body’s main water-soluble antioxidant, which helps protect cells from oxidative stress.
Supports Normal Immune Function
Vitamin C builds up in white blood cells, which hold it at many times the concentration found in the blood, and it plays a role in their normal function. Each capsule provides 25 mg of vitamin C (28% DV). Quercetin works alongside vitamin C to help support a healthy immune response.
Suggested use
Consume one capsule daily. You can increase your intake as required or as guided by your physician.
How it's made
Every ProCaps Laboratories product is formulated and made entirely by us, in our own facility — never outsourced to contract manufacturers.
We invest in making our own products because we prioritize quality and integrity over convenience.
In our formulations, ingredients are selected for their relevance, compatibility and effectiveness — not because they're popular or easy to sell.
We source the highest-quality raw materials, prioritizing the most bioavailable forms that are relevant.
Products are made in our 100% solar-powered facility under precise and controlled cGMP manufacturing processes, conducting in-house testing and verification of purity and potency throughout every step of production.
That's the ProCaps Promise: pure, science-driven and made with integrity by us for you.
Learn more about our commitment to quality.
Ingredients
(Quercetin, 80% phospholipids and 20% dihydrate)
* Percent Daily Values (% DV). † Daily Value not established.
Other Ingredients: Natural plant cellulose vegetarian capsule
Frequently asked questions
What is Quercetin?
Quercetin is a flavonoid, a type of polyphenol found in many plant foods, including onions, apples, berries, and capers. Its structure lets it neutralize free radicals, which is why it’s studied as an antioxidant. It's also recognized for its supportive benefits to the cardiopulmonary system, including the fragile tissues of both the heart and lungs.
Can I get Quercetin from food?
Yes. Capers, red onions, and cilantro are especially rich in it, and apples, berries, kale and tea also contain some. In food, quercetin is mostly bound to sugars, and how much the body absorbs varies.
Why is the Quercetin bound to phospholipids?
Quercetin dissolves poorly in water, and the digestive tract is mostly water, so quercetin on its own is poorly absorbed. Phospholipids, the same molecules cell membranes are built from, have a water-friendly end and a fat-friendly end. Binding quercetin to them is designed to help it pass through the cells lining the intestine.
The label says 500 mg. How much Quercetin is that?
The 500 mg is the whole quercetin phospholipid complex, which includes 235 mg of total quercetin and 135 mg of total phospholipids.