Quercetin is structurally similar to the anti-allergic drug disodium cromoglycate (cromolyn). In vitro and animal studies demonstrate that quercetin stabilises mast cells, neutrophils and basophils inhibiting antigen- as well as mitogen-induced histamine release (Blackburn et al 1987, Busse et al 1984, Middleton & Drzewiecki 1982, Middleton et al 1981, Ogasawara et al 1996, Pearce et al 1984). Inhibition of inflammatory enzymes, prostaglandins and leukotrienes, and modulation of Th2 excess may further contribute to the anti-allergic effects. Pretreatment with quercetin does not appear to produce any additional benefits.

Coping with Asthma

Coping with Asthma

If you suffer with asthma, you will no doubt be familiar with the uncomfortable sensations as your bronchial tubes begin to narrow and your muscles around them start to tighten. A sticky mucus known as phlegm begins to produce and increase within your bronchial tubes and you begin to wheeze, cough and struggle to breathe.

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