kos Quercetin 60 tablets — made in Italy. Quercetin Description Quercetin is a flavonol belonging to the group of bioflavonoids, also known as vitamin P…
kos Quercetin 60 tablets, sold under the kos brand, is manufactured in Italy. That origin is recorded at the "Internet-Sourced" evidence grade.
Origin evidence last reviewed 2026-06-24.
Every origin claim on Hesperia Market is graded by the strength of its evidence and linked to its sources.