Rafiullah Azizi smart zone

What’s in an energy drink?

Caffeine is the main active ingredient in energy drinks — they usually contain 70 to 80 milligrams of caffeine per 8-oz. serving, more than triple many cola drinks. Additional caffeine can come from energy drink’s other ingredients: guarna, kola nut, yerba mate and cocoa.

Energy drinks may also contain taurine (an amino acid), vitamins, herbal supplements such as yohimbine and ginseng and sweeteners.