How much caffeine is in each product?
The amount of caffeine in products like coffee and tea varies, but the American Academy of Sleep Medicine has listed the following estimates:
8 ounces (oz) of brewed coffee – 95 mg
1 oz of espresso – 64 mg
8 oz of brewed tea – 47 mg
16-oz average energy drink – 158 mg
12-oz average caffeinated soda – 45 mg
1.55-oz milk chocolate candy bar – 9 mg
Drugs that contain caffeine will display exact amounts on their labels.