I'm looking at the ingredients list online and, although all the ingredients are safe in theory, my red flag goes up when I can't find any listing on the quantity of the ingredients. Some of the ingredients, such as Vitamin B6, can lead to toxic effects if taken in regular megadoses. Other ingredients, like bee pollen and Vitamin B12, and Coenzyme Q, can cause slight allergic or intolerance reactions. Guarana seems to simply not be tested enough to prove anything good or bad. Lastly, Avora's website says that a serving will contain about 1.5 cups of coffee's worth of caffeine which, depending on your type of workout, could hinder you.