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Source Naturals, Activated Quercetin, 200 Tablets

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$34.75 (50)
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In Stock
  • Expiration Date: Sep 2020
  • Shipping Weight: 0.65 lbs (0.29 kg)
  • Product Code: SNS-00101
  • UPC Code: 021078001010
  • Package Quantity: 200 Tablets
  • Dimensions: 2.6 x 2.6 x 5.1 in, 0.55 lbs (0.25 kg)
Product Overview


  • Dietary Supplement
  • Bioflavonoid Complex
  • Suitable for Vegetarians

Activated Quercetin is a unique bioflavonoid derived from plant sources. In human cell culture studies, quercetin has been shown to inhibit histamine release. Additional research needs to be conducted to confirm the effects of quercetin, if any, in humans. Bromelain is a pineapple enzyme that may assist the body in times of stress. Magnesium ascorbate is a buffered (non-acidic) form of vitamin C that helps support the immune system.

Suggested Use

3 to 6 tablets daily in divided doses, between meals. If you have a delicate, easily irritated stomach, take with meals

Other Ingredients

Sorbitol, stearic acid, modified cellulose gum, colloidal silicon dioxide, and magnesium stearate.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.


Caution: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Supplement Facts
Serving Size: 3 Tablets
Servings Per Container: 66
  Amount Per Serving %DV
Calories 5  
Total Carbohydrate 1 g <1%*
Vitamin C (as magnesium ascorbate) 646 mg 1,076%
Magnesium (as magnesium ascorbate) 50 mg 13%
Quercetin 1 g
Bromelain (2,000 G.D.U. per gram)†† 300 mg
*Percent Daily Values (%DV) are based on a 2,000 calorie diet.
†Daily Value not established.
††GDU is a standard measure of activity for bromelain.
iHerb Customer Reviews


Posted by Reviewer1608169 on Jul 07, 2014

Did not work for me :(

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Activated QuercetinRutin + Rutin

Posted by OssieA on Aug 12, 2013

I take this product along with rutin 3 times daily and it stops my legs from aching and makes them feel normal again.

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Excellent product

Posted by Reviewer1141113 on Feb 01, 2013

I am using this to decrease my histamine levels, as i have mast cell activation disorder; a condition that is often associated with POTS (postural orthostatic tachycardic syndrome) and this has been useful as an adjunct to my anti histamines, and i am taking less antihistamine as a result; with less side effects.

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Best Brand & Formula!!!

Posted by HuskyZen on Jun 01, 2012

I have tried other brands which did absolutely nothing for my allergies and breathing. Since I discovered Source Naturals'Activated Quercitin it has been the only brand I trust. I do not know why there is a difference with other brands but this one is the only one that seems to make an impact on my health. I am 100% convinced that this particular blend is the best on the market. It not only has helped me but everyone I have ever given it to try it!

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Posted by Reviewer1527954 on Aug 23, 2011

Seems ok.

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