Quercetin Dihydrate Powder

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Of the many Bioflavinoids in existence, Quercetin is one of the most well studied. It is available in several forms including dihydrate, glycosides, aglycone, and rutinoside, with dihydrate providing the best bioavailability [1].

What is Quercetin Dihydrate?


Bioflavinoids are a class of nutrients naturally available in fruits and vegetables.

The bioflavinoid Quercetin Dihydrate is found in fruits and vegetables; most commonly apples and onions. Quercetin Dihydrate has some neuroactive properties similar to caffeine, only less potent [1]. From a biological perspective, Quercetin Dihydrate has been shown to promote apoptosis in unhealthy cell growths and decrease the absorption of dietary, lower plasma, and hepatic cholesterol [3, 4].

Quercetin Dihydrate has also been correlated with inhibiting the stages of RNA viral life cycles in airway cells in the lungs [5]. These and its other biological activities are believed to be the mechanism behind the many benefits Quercetin Dihydrate offers.

Quercetin Benefits

As one of the most popular bioflavinoids, Quercetin Dihydrate offers a wide variety of benefits to those who choose to supplement it. Quercetin Dihydrate is known to have anti-oxidant properties [1]. It has been used to promote the health of various conditions of the heart and blood vessels, eyes, mind, lungs, prostate, and many other organs [2].

Many have had success with supplementing Quercetin Dihydrate to combat fatigue. Plus, more serious competitors have even used it to increase endurance and promote athletic performance [2].

Quercetin Dihyrdate Dosage

Quercetin Dihyrdate has been given GRAS (Generally Recognized As Safe) status with no noted side effects in doses up to a few grams per day. The typical dosing recomendations are to take 12.5-25mg per kg of body weight. This translates to 850mg-1.7g per day for a 150lb person. This dosage is often divided into three administrations throughout the day. A good place to start is 400mg and work your way to a higher dose as needed.

You might also want to supplement Quercetin Dihydrate with other bioflavinoids such as Green Tea Extract, Genistein, or Resveratrol to increase its potency and benefits at a decreased level of intake [1].

CAS Number: 6151-25-3
Synonyms: 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one dihydrate; 3,3′,4′,5,7-Pentahydroxyflavone dihydrate


  1. http://examine.com/supplements/Quercetin/
  2. http://www.webmd.com/vitamins-supplements/ingredientmono-294-quercetin.aspx?activeingredientid=294&activeingredientname=quercetin
  3. http://www.scbt.com/datasheet-203225-quercetin-dihydrate.html
  4. http://medcontent.metapress.com/content/d465l7777427t557/
  5. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3360794/

Additional Resource

Quercetin Wikipedia Entry

Additional information


25 Grams


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