Source Naturals Activated Quercetin, Bioflavanoid Complex* - 100 Capsules

Brand: Source Naturals
Category: Quercetin
Recorded price: $20.26; 2 Sep 2026
Price per serving: $0.61

Supplement facts

Serving size: 3 Capsule(s)
Servings per container: 33

Ingredient	Amount per serving	% daily value
Protein	500 mg	1%
Vitamin C	788 mg	876%
Magnesium	50 mg	12%
Quercetin	1 g	—
Bromelain	300 mg	—

Other ingredients

Gelatin
Magnesium Stearate

Directions on the label

3 capsules 1 to 2 times daily in divided doses, between meals. If you have a delicate, easily irritated stomach, take with meals.

Label data from the Dietary Supplement Label Database.

Label data as of 3 Sep 2026

Product score

85.9 / 100Excellent

Category average: 81 / 100
Average for similar products: 80.7 / 100

This provides a substantial quercetin serving with several quantified supporting ingredients, though the label does not establish a special absorption advantage.

Scoring criteria

Quantity
100 / 100
The selected routine provides 1 g quercetin, a reasonable supplemental amount for the stated general role.
Form
75 / 100
The label identifies quercetin but no specialized form or delivery method with an established comparative absorption or tolerability advantage.
Convenience
70 / 100
The directions allow 3 capsules once or twice daily; one serving supplies 1 g quercetin, a reasonable supplemental amount, so the second serving is unnecessary for this assessment.
Label accuracy
100 / 100
The matched label gives quantified ingredient amounts and directions without an established contradiction.
Purity
75 / 100
No product-specific purity controls or defects are established by the supplied information.
Cofactors
50 / 100
The 300 mg bromelain is a meaningful, commonly paired supporting ingredient, but added benefit alongside quercetin is uncertain.