Quercetin Phytosome

22 Reviews

Veg Capsules 60

A potent antioxidant flavonoid

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SKU: quercetin-phytosome-THR
60Veg Capsules
In Stock

Product Details

Brand: Thorne Research

Product Code: quercetin-phytosome-THR

Servings per Container: 60

Quantity per Container: 60 Veg Capsules

Widely distributed in the plant kingdom, quercetin is the most abundant of the flavonoid molecules. It is found in many foods, including apples, onions, teas, berries, vegetables of the cabbage family, seeds, and nuts.

The crucial advantage that is attributable to Quercetin Phytosome is its advanced phytosome technology. Phytosome complexes are created by a patented process that binds a botanical extract to phosphatidylcholine, a key component of cell membranes. In the case of Quercetin Phytosome, quercetin is combined with sunflower-sourced phosphatidylcholine to create a phytosome complex that easily crosses the gut barrier.

Quercetin has many beneficial effects on human health. Probably its most well-known mechanism of action involves stabilization of mast cell membranes, which helps to decrease the release of histamine. Other benefits include cardiovascular support and protection of the gastrointestinal tract. A number of quercetin's beneficial effects appear to be due to its antioxidant activity. Quercetin scavenges free radicals and inhibits the oxidation of LDL cholesterol. By itself, and when paired with vitamin C, quercetin reduces the incidence of oxidative damage to skin and nerves caused by glutathione depletion.

  • Quercetin bound to sunflower-sourced phosphatidylcholine for enhanced absorption*
  • A Thorne Research exclusive
  • Helps stabilize mast cells that store and release histamine

Ratings & Reviews

22 reviews

  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews
12/14/2020 11:00:00 pm

works well

by Noriko -

works well

Not medical or professional advice

12/15/2020 11:00:00 pm

I will buy again

by Gayla -

Just recommended by my functional medicine doctor for inflammation. Seems to have stopped my itching.

Not medical or professional advice

5/18/2023 7:11:00 am

Great for histamine

by C -

This product consistently helps with reducing histamine!

Not medical or professional advice

9/7/2023 8:49 am

High quality supplement

by David Kleiman

I like this brand and am very happy with this product. It’s worth paying a little more for high quality and these work wonders for my health issues.

Not medical or professional advice

9/7/2023 8:50 am

Quick Transaction!

by Gil Harbach

Excellent Product!

Not medical or professional advice

9/7/2023 8:50 am

Who am I to talk about quality?

by Countleo

It could all be the same and how would we know, not being a lab?

Not medical or professional advice

9/7/2023 8:51 am

I feel good when I take this

by Cynthia

It gives me a sense of feeling healthier. I feel more cognitively sharp and less sluggish when I take it.

Not medical or professional advice

9/7/2023 8:51 am

Amazing for people that suffer from allergies, would highly recommend

by Nick

I have long suffered from allergies seasonally. Every year like clockwork September through November, and April through May, I get intense headaches, runny nose, scratchy throat, and many other symptoms associated with allergies. Sometimes my allergies are so bad that I have sneezing fits wher I sneeze for five minutes nonstop. I have always relied on over-the-counter medication‘s like Claritin and Nasonex to help me. That is until I found this. This pill works so well, and I like that I don’t have to worry about the fact that it’s a pharmaceutically, manufactured chemical, but a naturally occurring compound found in plants. By this medicine, if you suffer from allergies, I know it will help you.

Not medical or professional advice

9/7/2023 8:52 am

Great supplement for help with allergies

by Ronette Applegate

I take this supplement during allergy season.

Not medical or professional advice

9/7/2023 8:52 am

Effective, trusted, supplement. Good quality product.

by Suzy Q

I trust Thorne products. Quercetin helps me with food allergies. If taken at night, I don't wake up congested. Zinc is also good for food allergies. I take both. I'm doing much better since being on these products.

Not medical or professional advice

9/7/2023 8:52 am

Great Brand, Great Vitamin

by Nicole Leckie

Thorne is fantastic. 5 easy stars. And if you’re reading this, it is good to pair Quercetin with Zinc for better absorption. :) Stay healthy, friends!

Not medical or professional advice

9/7/2023 8:53 am

No More Sneezing & Sniffly Nose Allergy Issues

by trees

Claritin and Flonase were not very effective. I researched Quercetin & learned a wealth of information including from NIH. And I learned that it doesn’t work for everyone. I took a chance & after less than 12 hours after my first 250 mg Quercetin, no more sneezing & sniffling nose issues. I take 250mg morning & 250mg evening.

Not medical or professional advice

9/7/2023 8:53 am

Quercetin for Energy and Inflammation

by CuseSweetnessUSA

I’ve been a fan of quercetin for years and I know it helps me with increased energy and endurance. I had been drinking FRS for years and I love it, but they go in and out of stock frequently and shipping is expensive. Taking it daily, quercetin gave me the energy boost that I needed after long days at work to get my work out done in the evening. I stopped taking FRS for a while and noticed a difference (most notably a weight gain) so I’m glad that I found this supplement by Thorne as my new alternative. Thorne is a reputable company, so I trust the quality of the supplement.

I recommend googling quercetin to see if it’s right for you. Dr Axe is a fan of it as it fights inflammation and free radicals. Inflammation is the root cause of a lot of diseases, so quercetin is a minimal investment with potentially great returns.

Not medical or professional advice

9/7/2023 8:54 am

Good anti sick med

by Jennife A Kroeger

Was ok to digest

Not medical or professional advice

9/7/2023 8:54 am


by KoalaB

My doctor prescribed this supplement approximately 4 years ago, and ever since, my lab reports regarding cholesterol have been very good!

Not medical or professional advice

9/7/2023 8:55 am

Exactly what was needed

by S Bart

Very satisfied with this protect. Reliable results. Safely made.

Not medical or professional advice

9/7/2023 8:55 am

Best quercetin on the market, though I wish it were cheaper!

by Jodi

I take 500mg of quercetin twice a day, so I switch between this product and a regular dihydrate version with no phytosome, for cost reasons. I bought this one because studies show it is more bioavailable than regular quercetin. I find it has helped my reactions a lot, and especially seasonal issues with pollen and other allergies. I don't leave home without it now.

Not medical or professional advice

9/7/2023 8:56 am

Add these two to your daily pills

by Just me

My daughter told me to get these and I think they are helping me feel a bit better

Not medical or professional advice

9/7/2023 8:57 am

Good product

by cmf

Arrived quickly - good product

Not medical or professional advice

10/20/2023 8:21 am

I trust this product

by Bill -

Based on my research, this product from Thorne contains one of the most bioavailable forms of quercetin. Taken to reduce inflammation and as a prophylactic against respiratory ailments.

Not medical or professional advice

12/9/2023 1:49 pm

Trusted brand

by Brenda -

Good source to help with allergies by a trusted brand

Not medical or professional advice

2/18/2024 7:04 am

Good brand

by Jacqueline -

I like this brand because it has more quercetin per capsule than others, so I don't have to take many pills during the day. Quercetin is usefull for allergies.

Not medical or professional advice