that their promotional materials promoted EGCG-based dietary supplements in the treatment or prevention of diseases or conditions that cause them to be classified as drugs under the United States code, while another focused on inadequate quality assurance procedures and labeling violations. The warnings were issued because the products had not been established as safe and effective for their marketed uses and were promoted as "new drugs", without approval as required under the Act. See also Health effects of tea Tannin Phenolic content in tea List of phytochemicals in food References 11β-Hydroxysteroid dehydrogenase inhibitors Aromatase inhibitors Flavanols