Quercetin — the Highveld hay-fever flavonoid
Quercetin is a plant flavonoid found in onions, apples and capers that stabilises mast cells — the immune cells that release histamine. It is the most-studied natural option for hay-fever and seasonal allergy support. The validated daily dose is 500–1,000 mg, typically paired with bromelain to improve absorption.
Why Gauteng needs it from September
The Highveld hay-fever season (late August to early November) is driven by grass pollen, with rye, kikuyu and Bermuda grass dominant. Quercetin + bromelain stacked daily 2–4 weeks before peak season has the strongest anecdotal track record for symptom prevention.
Pair with vitamin C and bromelain
Vitamin C extends quercetin's plasma half-life; bromelain (a pineapple enzyme) modestly improves its absorption. A common stack is quercetin 500 mg + bromelain 100 mg + vitamin C 500 mg, twice daily.
Quercetin FAQ
When should I start taking it for hay fever?
Two to four weeks before pollen-season peak — late July through August in Gauteng — gives the mast-cell stabilising effect time to build.
Can I take it with antihistamines?
Generally yes — quercetin works upstream of histamine release, not on the receptor. Speak to your pharmacist if you are on prescription medications.
Does it interact with medication?
Quercetin can affect cytochrome P450 enzymes. Speak to your doctor if you take blood-thinners, calcium-channel blockers or chemotherapy agents.
Vegan?
Yes.
Safe in pregnancy?
Insufficient safety data — consult your healthcare provider.