Chamomile (American English) or camomile (British English) is the common name for several daisy-like plants of the family 'Asteraceae'. It may be used as a flavoring agent in foods and beverages, mouthwash, soaps, or cosmetics. Chamomile tea is a herbal infusion made from dried flowers and hot water.

Chamomile has historically been used in making beer and ale. Unlike for tea, in which only the flowers are used, the whole plant has been used to make beers and ales, adding a bitter flavor component favored by craft breweries and homebrewers.

The use of chamomile has the potential to cause adverse interactions with numerous herbal products and prescription drugs and may worsen pollen allergies. People who are allergic to ragweed (also in the daisy family) may be allergic to chamomile due to cross-reactivity.

Apigenin, a phytochemical in chamomile, may interact with anticoagulant agents and nonsteroidal anti-inflammatory drugs, while other phytochemicals may adversely interact with sleep-enhancing herbal products and vitamins. Chamomile is not recommended to be taken with aspirin or non-salicylate NSAIDs (non-steroidal anti-inflammatory drugs), as it may cause herb-drug interaction. It should not be used by people with past or present cancers of the breast, ovary, uterus, endometriosis or uterine fibroids.

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