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🛡️ Elevate your immune game with science-backed, ultra-absorbable quercetin!
THORNE Quercetin Phytosome delivers a highly bioavailable form of quercetin—20 times more absorbable than standard extracts—supporting immune function, respiratory health, and antioxidant defense. Manufactured in the USA with NSF third-party certification, it’s trusted by elite athletes and healthcare professionals for purity, potency, and clinical validation.

















| Asin | B0797DQTVZ |
| Country Of Origin | USA |
| Item Model Number | SB335 |
| Manufacturer | Thorne Research |
| Product Dimensions | 5.31 x 5.31 x 9.45 cm; 58.97 g |
User
مميز
ممتاز
User
Boosted immunity
Great supplement. Allergies (nasal) vanished and no side effects. Helped me get over colds n coughs quicker. A super natural antihistamine and anti-inflammatory 🙌.
User
I don’t see the difference
I was taking this for my allergies and I don’t see any difference… I got on to antibiotics to reduce my allergies. But maybe a continued use of this supplement before the allergy season might help.
User
Very good product
Excellent product
User
Great stuff
Ok so my histamine levels were over 7867 in highest ref range 959 /7 times the norm basically/. The bloating was one thing, but every morning I felt like I have something stuck in my throat that I desperately want to caugh out, but couldn’t. ChatGpt told me to get Quercitin and Vitamin C. I’ve heard about this brand Thorne that athletes use so even tho more expensive than other brands - I gave it a try. Long and behold the sensation in the throat IS GONE. I don’t know the histamine levels, but it is obvious this works
User
Good but pricey
This is Thorne's version of liposomal quercetin and it does work if you take two capsules four times a day for your MCAS, but I can't afford it. Other products called "liposomal" do the same thing.
User
These were exactly what I needed after 5 months of torture
My eustachian tubes have been full of velcro/rice krispie sounds for 5 months. It distorted sounds and the crackling noises every time I yawned or swallowed was so maddening. Learned there was an inflammation in the narsopharynx and now my eosinophils were chaotic and wouldn't calm and kept re-inflaming tissue on their own. I learned that quercetin inhibits the eosinophils so they can "realize" that there is nothing no longer wrong and go back to my normal range. After two weeks of use FINALLY the tube blockage dissipated and function nearly as they should since the eosinophils are finally chilling out and going back to normal numbers. I am nearly recovered and no longer hear crackling in my ears. BLESS THESE PILLS.
User
Life Changing?
I'm a long-perm consumer of anti-depressant and anti-enxiety meds. This Thorne product appears to have have given me the boost that prescription meds cannot match. Such has been the positive change in the six weeks since I began taking it, I am reluctant to put it all down to Quercetin, but I haven't had a single bad day since starting them. Before this, I rarely had a good day. I will update in a few months.
Trustpilot
1 month ago
3 weeks ago