All natural. The Milo's Tea Story - Began after Milo Carlton served his country within the Food Services Division from 1941-1945. He prepared meals (& tea!) on jeeps, trucks, planes, ships, & on beaches in 4 countries. Upon his return home, Milo opened his first restaurant in 1946 where he began perfecting the Milo's Famous Tea recipe. Many years later, a lot has changed, but some things don't need to - customers still look forward to more great experiences with Milo's because quality never goes out of style. Today, we are committed to carry on that same tradition of quality & excellence. No preservatives. 87 mg Of flavonoid antioxidants per serving.