The better-absorbed one
Quercetin phytosome
Bound to fats, which helps your body absorb much more of it.
Good for: Everyday use
What variations of quercetin exist?
A plant pigment found in onions, apples, and berries. It may help calm histamine release and support a healthy inflammatory response. It comes in 3 forms, and they aren't all the same. Here's how they differ.
For education only. What's right for you depends on your health and your medications, so check with your provider before you start or switch. Book a consult
Our top pick
Every form, in plain words
The better-absorbed one
Quercetin phytosome
Bound to fats, which helps your body absorb much more of it.
Good for: Everyday use
The close cousin
Isoquercetin (EMIQ)
A related form your body absorbs better than plain quercetin.
Usually skip
- The plain one (Plain quercetin dihydrate)Poorly absorbed on its own. Often paired with bromelain or vitamin C.
Spotting a good one on the shelf
Look for
- Look for 'Quercetin phytosome' on the label (the better-absorbed one)
Watch out for
- Plain quercetin with no absorption support
- Allergy blends with many ingredients and no amounts listed
Check with your provider first if…
- You're pregnant or breastfeeding
- You have kidney disease
- You take blood thinners, cyclosporine, or other medicines processed by the liver. Quercetin can change their levels.
- You take certain antibiotics (such as ciprofloxacin), since quercetin may make them work less well
In Dr. Lesher's store
8 products in Dr. Lesher's dispensary have quercetin. Here's which form, where the label says.
Check with your provider before taking any of these, especially if you're pregnant or take medications.
Patient One MediNutritionals
GastroOne Gut Health Formula
Has plain quercetin dihydrate (the plain one)
100 mg per serving
Quicksilver Scientific
Hista-Aid
Has plain quercetin dihydrate (the plain one)
9 mg per serving
Seeking Health
Vitamin C Plus
Has plain quercetin dihydrate (the plain one)
20 mg per serving
Designs for Health
Quercetin Ascorbate Powder
960 mg per serving
Vitanica
Bladder Ease (IC Blend)
200 mg per serving
Designs for Health
C+BioFizz Effervescent Powder
20 mg per serving
Nutritional Fundamentals for Health
GI Repair SAP
100 mg per serving
Metagenics
Immune Active™
125 mg per serving
Ready to find the root cause?
Dr. Lesher is a Naturopathic Doctor who focuses on autoimmune and chronic conditions in women. Since 2020, she's helped hundreds of patients stop managing symptoms and start healing.