Other ingredients
Leucine; Microcrystalline Cellulose; Hypromellose (Cellulose); Silicon Dioxide (SiO2)
Image: NIH Office of Dietary Supplements, Dietary Supplement Label Database — No separate image reuse license stated
Thorne
Quercetin Phytosome
Capsule
Serving size1 Capsule(s)
Servings per containerNot listed
Package60 Capsule(s)
Data retrievedJul 28, 2026
Supplement Facts
Serving size 1 Capsule(s)
Quercetin Phytosome250 mgDV not established
Label directions
Suggested use: Take 1 capsule two to three times daily with meals or as recommended by your health-care practitioner.
Label warnings
Tamper evident: Use only if bottle is sealed. If pregnant consult your health-care practitioner before using this product.
Identity and label version
NIH label record336310
Entered into NIH DSLDAug 22, 2025
UPC / GTIN00693749004356
Manufacturer / distributor on labelThorne Research Inc.
Market statusOn market in the source data
“Entered into NIH DSLD” is the database entry date for this label record. It is not a manufacturer launch date or a label effective date.
NIH label history (2)
Current labelNIH record 336310Entered Aug 22, 2025
Quercetin Phytosome250 mg
Label warning: Tamper evident: Use only if bottle is sealed. If pregnant consult your health-care practitioner before using this product.
Earlier labelNIH record 298048Entered Oct 24, 2023
Quercetin Phytosome250 mg
Label warning: Tamper evident: Use only if bottle is sealed. If pregnant consult your health-care practitioner before using this product.
Sources and traceability
- NIH Dietary Supplement Label DatabaseData retrieved Jul 28, 2026Open source ↗
More from Thorne
Data comes from product labels or official public sources. It does not mean Safmira, NIH, or FDA approves, certifies, or recommends this product. Label amounts are not laboratory measurements.