Quercetin is a flavonoid found in onions, apples, berries and green tea. In standard powder form, it has poor intestinal solubility that significantly limits absorption. Indena’s Quercefit technology solves this by chemically binding each quercetin molecule to phospholipids from non-GMO sunflower lecithin. This phytosomal complex crosses the intestinal barrier far more efficiently than a simple liposome, which merely encapsulates the active with no direct chemical bond.

As a potent antioxidant, phytosomal quercetin contributes to cellular defence against oxidative stress, a factor in premature ageing and fatigue. Athletes find it a natural support for post-exercise recovery, while those exposed to urban pollution appreciate its daily protective action.

Unlike a classic liposome that encapsulates the active in a lipid sphere, the phytosome chemically binds the quercetin molecule to the phospholipid’s hydrophilic head, improving membrane compatibility and digestive dispersion. Quercetin is extracted via an aqueous process from Sophora japonica L. flowers. Published comparative studies show this form reaches plasma concentrations up to twenty times higher than raw quercetin powder.

Take 2 capsules a day, ideally 12 hours apart, with meals, to maintain steady plasma quercetin levels. Some find one capsule a day sufficient. Pairs well with natural vitamin C for enhanced antioxidant coverage, or mushroom extracts like reishi for synergistic natural-defence support.

For adults only. Not recommended for pregnant or breastfeeding women or children without prior medical advice. Do not exceed the recommended daily dose of two capsules. If taking medication, particularly anticoagulants or immunosuppressants, consult a healthcare professional before use. Store in a cool, dry place away from light and moisture, out of reach of young children.

What’s the difference from standard quercetin?

Standard powder quercetin has poor intestinal solubility limiting absorption; the Quercefit phytosomal form uses sunflower phospholipids to boost bioavailability roughly twentyfold according to comparative studies.

Is this suitable for vegans?

Yes — fully vegan: quercetin from Sophora japonica L., phospholipids from non-GMO sunflower lecithin, and a pullulan (plant-based) capsule shell.

What supplements pair well with Quercefit quercetin?

It combines particularly well with natural vitamin C, which reinforces antioxidant action, and with mushroom extracts like reishi for synergistic natural-defence support.

Herba Barona is an independent specialist supplement shop in the heart of Paris — established in 2006. What you order is genuinely on our shelves: we ship from our own stock, with no dropshipping and no long waits.

Visit us at 10 rue Théophile Roussel, Paris 12 — or use Click & Collect and pick up your order in-store. We also deliver across France and Europe. Friendly, expert advice in English from our team.

Where is the shop?

Herba Barona is at 10 rue Théophile Roussel, 75012 Paris — a two-minute walk from Ledru-Rollin (line 8), close to Bastille. Open Tuesday to Saturday, 9:30 am–6:30 pm.

Can I order online or collect in store?

Yes. We ship across France and Europe under the same conditions as our French store, or choose Click & Collect to pick up your order for free at our Paris shop.