Flavonoids are plant compounds studied for antioxidant activity, with quercetin being the main flavonoid supplement available in this category. Below you’ll find our picks, along with the medication interactions worth knowing before you buy.
Immunity & Antioxidants
Immunity & Antioxidants
Flavonoids: What Research Actually Shows
This category currently features Quercetin, a plant bioflavonoid studied for antioxidant activity and, more importantly, known for genuinely significant interactions with common medications via liver enzyme inhibition (CYP3A4, CYP2D6, CYP2C19, CYP1A2) — affecting drugs from certain antidepressants to blood thinners. If you take regular prescription medication, checking with your GP before starting a flavonoid supplement is genuinely worth doing, not a formality.