Quercetin
Feb 16, 2025
Quercetin
Gen:
Quercetin belongs to a group of plant pigments called flavonoids that give fruits and vegetables their color. Flavonoids are considered to be antioxidants.
Mechanism of Action:
Flavonoids are antioxidants, meaning they neutralize free radicals that are generally regarded as dangerous for being able to damage cell membranes and DNA, causing cell death. These flavonoids, quercetin included, can decrease the damage that free radicals cause. Quercetin can also stabilize cells that release histamine in the body and therefore can have an anti-inflammatory and anti-histamine effect.
Dosage:
The most common dose for adults is 500 mg one a day, but some people can take up to 1000 mg a day.
Precautions:
Generally considered safe, some side effects can include upset stomach and headache. Very high doses above 1000 mg per day, there have been reports of kidney damage as some evidence suggest that a product of quercetin can lead to a loss of protein function.
Interactions:
Quercetin may reduce the effectiveness of certain antibiotics. Quercetin may enhance the effects of blood thinners such as warfarin, clopidogrel, aspirin as well as drugs such as corticosteroids, digoxin, and medications that are metabolized by the liver.
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