BioStacks
Source Naturals

Activated Quercetin

3 Tablets · 66 servings · $0.81/serving

iHerbAmazon

Best for

Immune

Ingredients (4)

Quercetin

100%

Dose

1000 mg

Target

500–1000 mg

Form

—

Vitamin C

100%

Dose

788 mg

Target

50–250 mg

Form

Budget

Magnesium

50%

Dose

50 mg

Target

100–400 mg

Form

Standard

Bromelain

300 mg

Unit not recognized — not scored

Other Ingredients (2)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

How to Take It

Best taken in the evening

The Magnesium in it is what pulls this toward the evening. What's in this absorbs poorly without a fat-containing meal — take it with one.

With a meal containing fat
Space it a couple of hours from Iron and Calcium

On the label

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

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$53.19

$20$50

Pricier than 85% of 15 bromelain supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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