Quercetin Complex Flavonoid · Biocare | 90 capsules

Why we chose this

Quercetin is one of the most widely distributed flavonoids in the plant kingdom — found in onions, apples, capers, berries and leafy greens. This formula delivers 900 mg of quercetin per day, sourced from Sophora japonica flower — a botanical source that provides a concentrated, standardised form of the compound. Biocare pairs it with bromelain, the proteolytic enzyme from pineapple that is commonly combined with quercetin for reasons of formulation; nettle leaf (Urtica dioica) as a 4:1 concentrated extract; and vitamin C, for immune function and cell protection from oxidative stress.

Who is this formula for?

• Adults who want a high-dose quercetin supplement (900 mg/day) combined with bromelain and vitamin C in a single clean capsule format.
• People who prefer a vegan, allergen-free capsule with no unnecessary fillers.
• Adults who want a daily plant polyphenol formula for general nutritional coverage alongside a varied diet.

Frequently asked questions

What is quercetin and where does it naturally occur? Quercetin is a flavonol — a subclass of plant polyphenols — found naturally in many common foods including onions (particularly red onions), capers, apples, berries, buckwheat, broccoli and leafy greens. It is one of the most abundant dietary flavonoids.

What is the source of quercetin in this formula — is it from a plant? Yes. The quercetin is derived from Sophora japonica flower — a plant source. It is not synthetic. Sophora japonica is the same botanical source used by the majority of quercetin supplement manufacturers due to its high natural quercetin content.

Why is bromelain included with quercetin? Bromelain is a proteolytic enzyme from pineapple stem. It is a standard co-ingredient in quercetin formulas because protease enzymes are thought to support the absorption and transport of co-ingested polyphenols. Bromelain also has its own properties as a food enzyme.

Does this formula contain pineapple allergen? Bromelain is derived from pineapple stem. Individuals with a known sensitivity to pineapple should be aware of its presence. Always check the current product label.

How does this differ from taking a standard vitamin C supplement? A standard vitamin C supplement delivers ascorbic acid and nothing else. This formula delivers 90 mg of vitamin C alongside 900 mg quercetin, 54 mg bromelain and 150 mg nettle leaf extract in a single daily dose. If your primary goal is vitamin C intake at a clinically meaningful dose, a dedicated vitamin C supplement will deliver more per capsule. This formula is for those who specifically want quercetin and bromelain alongside their vitamin C in one product.

Is this product suitable for vegans? Yes. All ingredients are vegan. The capsule shell is HPMC (hydroxypropyl methylcellulose) — vegetable cellulose.

How long does one bottle last? At the recommended dose of 1 capsule taken three times daily (3 capsules per day), one 90-capsule bottle provides 30 days' supply — one month.