On ordinary, Ceylon black tea is made up of 50mg of caffeine per cup, with versions of Ceylon remaining better or reduce. While other types of black tea normal 47mg of caffeine for every cup. Ceylon handles a number of teas that range in caffeine levels. Green is 35mg, https://benefits-of-green-tea-on00999.blogoxo.com/31009016/5-essential-elements-for-does-thai-jasmine-tea-have-caffeine