How Much Caffeine in Red Bull?

Question: How much caffeine in a Red Bull?

Answer: When we think of an energy drink, a Red Bull is likely one of our first thoughts. Red Bull is the top-selling energy drink brand as of 2015 with over 40% of the market share. In total, the company has sold 60 billion cans over its lifetime.

A big reason Red Bull is considered an energy drink is because it contains a significant amount of caffeine along with B-vitamins, and the amino acid taurine. Let’s look at how much caffeine is in a Red Bull.

An 8.4 fluid ounce can of Red Bull contains 80 mg of caffeine. A coffee of the same serving size has about 100 mg of caffeine.

How does the caffeine in Red Bull compare its competitors? We broke down the caffeine per ounce for some of the leading energy drink brands. You can see that the caffeine is approximately the same in all products.

Energy Drinks - Caffeine Content

ProductCaffeine -
One Fluid Ounce
Red Bull 9.52 mg
Amp Original8.88 mg
Monster Original10 mg
Nos Original 10 mg
Rockstar10 mg

The Mayo Clinic states that 400 mg or less caffeine per day is safe for the majority of healthy adults. That is equivalent to about 2 .5 (16-ounce) energy drinks a day.