Quercetin Dihydrate
Quercetin Dihydrate
Snapshot
Quercetin Dihydrate is a flavonoid antioxidant supplement that supports immune function, vascular health, and anti‑inflammatory responses.
What is Quercetin Dihydrate?
Quercetin Dihydrate is the crystalline, more stable form of quercetin, a plant‑derived polyphenol found in onions, apples, and berries, known for its free‑radical scavenging and kinase‑modulating activities.
Where It Comes From
Extracted from plant sources such as citrus peels or capers, quercetin is purified and recrystallized with water molecules to form the dihydrate, then milled into a fine pale yellow powder.
Key Nutrients & Compounds
Provides quercetin molecules that inhibit lipid peroxidation, stabilize mast cells, and modulate signaling pathways (e.g., NF‑κB, MAPK), alongside its glycosides in whole foods.
Health Benefits
Quercetin Dihydrate supports respiratory comfort by reducing histamine release; promotes cardiovascular health by improving endothelial function and blood pressure; and exhibits broad anti‑inflammatory and antioxidant effects.
Recommended Dosage
Typical supplemental doses range from 250 mg to 500 mg, 1–2 times daily, preferably taken with vitamin C or bromelain to enhance bioavailability and synergistic action.
How to Use It
Take capsules or powder with meals; combine with bioenhancers (e.g., fat‑containing foods, piperine) or alongside enzymatic cofactors like bromelain for enhanced absorption.
Who Should Use It?
Individuals seeking natural support for seasonal allergies, inflammatory conditions, or cardiovascular wellness; athletes and active individuals may use it for recovery support.
Possible Interactions or Cautions
May interact with certain antibiotics and blood thinners; high doses can cause headache or digestive discomfort; consult a healthcare provider if on prescription medications.
Final Thoughts
Quercetin Dihydrate offers a stable, potent form of a versatile flavonoid, delivering antioxidant, anti‑inflammatory, and vascular‑supportive benefits when formulated for optimal absorption.
Scientific Studies
Boots AW, Haenen GRMM, Bast A. Health effects of quercetin: from antioxidant to nutraceutical. Eur J Pharmacol. 2008;585(2‑3):325–337. https://doi.org/10.1016/j.ejphar.2008.03.008
Li Y, Yao J, Han C, et al. Quercetin, inflammation and immunity. Nutrients. 2016;8(3):167. https://doi.org/10.3390/nu8030167
Edwards RL, Lyon T, Litwin SE, et al. Quercetin reduces blood pressure in hypertensive subjects. J Nutr. 2007;137(11):2405–2411. https://doi.org/10.1093/jn/137.11.2405