Q. Does instant tea powder have a lot of caffeine?

Answer

One serving of instant tea powder has 5.50 mg of caffeine (16.91 mg per 100 ml). A total of 40 milligrams of caffeine can be found in a single 8-ounce serving. Unless caffeine is added after the tea has dried, instant tea powder typically has less caffeine than brewed tea. Caffeine content in a standard 8-ounce cup of instant tea averages about 40 milligrams. Conversely, a standard 8-ounce cup of brewed green tea has about 28 milligrams of caffeine. Caffeine content differs not just between brewed and instant teas, but also among different types of tea.