Quick read: Quercetin is a naturally occurring polyphenolic flavonoid compound abundantly found in various fruits, vegetables, grains, and leaves, notably apples, onions, and berries.

Quick facts · Rutin

Dose

250 mg

Per day

500 mg

Timing

Twice a day

Course

90 days + break 30 days

Strongest effect

Allergy Symptom ReliefHighTheoretical