Apigenin-d4 is a deuterated compound of Apigenin. Apigenin has a CAS number of 520-36-5. Chamomile is an aromatic oil extracted from the flowers or leaves of the daisy-like plants. Extracts, oils and teas made from chamomile are used for its soothing qualities as a sedative, mild analgesic and sleep medication. Chamomile has not been implicated in causing serum enzyme elevations or clinically apparent liver injury.