Quercetin: The Natural Antihistamine

Let us talk about Quercetin. Yes, it is a bit of a mouthful, but it is magic. This natural antihistamine is your secret weapon for preventing and managing allergic reactions, whether it is for seasonal sniffles, a pesky insect bite, or even a food allergy flare-up.

What Makes Quercetin Special?

Quercetin is a powerful plant flavonoid. It works by stabilising mast cells (the cells responsible for releasing histamine), inhibiting histamine release, acting as an antioxidant, and supporting immune regulation so the body responds proportionally rather than overreacting.

Where to Find It in Food

• Red onions (highest source)
• Capers
• Apples, especially with skin
• Berries, particularly blueberries and blackberries
• Broccoli and kale
• Green tea
• Buckwheat

Quercetin and Hormones

There is an important connection between histamine and oestrogen that often goes unrecognised. Oestrogen stimulates histamine release, and histamine in turn stimulates oestrogen production. This feedback loop can worsen symptoms in the second half of the menstrual cycle, during perimenopause, or in women with oestrogen dominance.

Supplementing with Quercetin

A typical therapeutic dose is 500 to 1000mg daily, ideally with bromelain from pineapple, which enhances absorption. Always check with a practitioner before starting any supplement, especially if you are on medication or pregnant.