Since it's not widely recognized as a caffeine source, some people may not realize how much they are ingesting.Sugar-as sucrose, glucose, fructose, high fructose corn syrup, or agave-is a main ingredient in many popular energy drinks.
Here are some of the most common energy drink ingredients and their effects: A stimulant that acts on the central nervous system to increase alertness, caffeine also enhances exercise performance when consumed before a workout, and reduces post-exercise muscle pain when ingested after.The caffeine in energy drinks may be synthetically derived or it may come from green tea extract, raw green coffee beans, or guarana.People who drink a lot of sweetened soda are at increased for heart disease and diabetes, so it follows that excessive energy drinks consumption carries the same risk.B vitamins, including vitamin B3, B6, and B12, are popular additions to many energy drinks, due to their role in energy metabolism and red blood cell formation in the body.The most common side effect is insomnia, but other reactions have been reported, including allergy, breast tenderness in women, liver damage, menstrual problems, and headache.
People with autoimmune diseases such as lupus and those with uncontrolled high blood pressure shouldn't use ginseng.Studies have shown that extracts of the leaf may increase circulation to the brain and act as a powerful antioxidant.It is sometimes added to energy drinks to help improve memory and brain function.: Ginkgo may cause headache or stomach upset and may affect bleeding time in some people.Sugar provides an immediate spike in energy, followed by an inevitable crash some hours later.Some energy drinks contain upwards of 62 grams of sugar per serving.It has been reported to enhance endurance exercise performance and increase fat burning, and is often added to energy drinks for these effects.: Taurine is generally well-tolerated but one serious allergic reaction has been reported in the literature.