"Green tea. usually contains around 25 milligrams of caffeine per 8-ounce serving. It's about half of the amount of caffeine found in a typical cup of black tea

"Green tea. usually contains around 25 milligrams of caffeine per 8-ounce serving. It's about half of the amount of caffeine found in a typical cup of black tea and one-quarter of the amount found in a typical cup of coffee." From: https://www.thespruceeats.com/caffeine-in-coffee-tea-cola-765276 https://www.thespruceeats.com/caffeine-in-coffee-tea-cola-76...