Download Black Tea Vs Instant Coffee Caffeine PNG. Coffee usually has around 150/150 mls. Drinking caffeine in excess may cause headaches, diarrhea, irritability, heartburn, dizziness, sleep issues, nervousness.
However, there's only one significant difference that exists, that is, the difference in the amounts of the caffeine they both contain.
However when brewed into a beverage a cup of coffee will generally according to this website (see below) black tea (i believe earl grey/gray) comes in at 40 mg per 5 oz and coffee is 80 mg per 16 oz. The caffeine in tea is said to increase concentration, and. As just mentioned, take the simple fact that if you can tolerate caffeine, coffee is a great. Black tea caffeine is a stimulant that has been shown to improve concentration, increase speed in reaction time, increase alertness etc.