The onion has been used as a food remedy for centuries in bronchitis. It is said to possess expectorant properties .
It liquefies phlegm and prevents its further formation. One teaspoon of raw onion juice, the first thing in the morning will be highly beneficial in such cases.
Why should the humble onion play such a vital role in the treating of this common chronic disease? Scientists say it enables the body to stop the production of cytokines, agents of inflammation that keep the lungs filled with mucus that inhibits normal breath.