Nutrients, phytochemicals and bioactivity of wild Roman chamomile: A comparison between the herb and its preparations

► Chamaemelum nobile proved to be an equilibrated valuable herb. ► The herb and its infusion are a source of phenolic compounds and organic acids. ► The herb and its infusion gave antioxidant and antitumour activities. ► The herb and its infusion did not show hepatotoxicity. ► Its decoction showed lower antioxidant potential and absence of antitumour activity.