Allium

Allium cepa

The onion, grow worldwide, has been used across many continents and by many religions for its healing properties. The whole red onion bulb is used, and its potent oil stimulates the tear glands and nasal mucous membranes, causing the eyes and nose to water. In homeopathy, it is used to treat conditions which include these symptoms, such as colds, allergies, and hay fever.