Typical energy drinks have a caffeine content of 32 mg per 100 ml. Energy drinks contain about the same amount of caffeine as a cup of home-brewed filter coffee.
In general, the consumption of energy drinks should conform to a person’s intake of caffeine. Many authorities around the world have looked at the effects of caffeine. Health Canada scientists conducted an extensive review of the scientific literature on caffeine (Nawrot et al., 2003). Based on this review, they concluded that the general population of healthy adults is not at risk for potential adverse effects from caffeine if they limit their consumption to 400 mg per day. Most recently, this has been confirmed by the European Food Safety Authority (EFSA, 2015).
However, EFSA recommends that pregnant and breast-feeding women limit their caffeine intake to 200 mg per day. The rules for the labelling of caffeine containing beverages are the same across the EU (Food Information to Consumers Regulation (EU) No 1169/2011) Beverages containing more than 150 mg/l must indicate the caffeine content and carry the advisory statement “High caffeine content. Not recommended for children or pregnant or breast-feeding women” followed by the caffeine content in brackets expressed in mg per 100 ml on the label.
Overdose or excessive consumption of any food and beverage is detrimental to health. Even water, when consumed in excess, is harmful. Nutrition experts agree that it is important to consume foods and beverages from many different sources and in moderation. Of course, this is also true for energy drinks, which can be part of a balanced and varied diet as well as a healthy lifestyle. Therefore, it is recommended to consume energy drinks in moderation.