Green Tea Extract is very popular with the health conscious community, mainly because of the broad antioxidant features, which are provided by the green tea catechins. It is a very popular nutritional supplement, much more popular than regular green tea, because several green tea extract products have no caffeine. Caffeine is actually contained in larger quantities in green tea than in coffee. Besides the already mentioned catechins, further polyphenols are included in the Asian tea favorite. Green tea furthermore contains carotenoids, ascorbic acid – more commonly known as Vitamin C, Minerals and tocopherols. While there are many proven qualities of green tea extracts, some lesser researched effects have been observed, like reduction of LDL cholesterol, increasing the levels of norepinephrine, weight loss and additional antioxidant qualities.

Guarana, a stimulant derived from the seeds of the Brazilian Guarana plant. Guarana is used to increase alertness and help fight fatigue. It contains caffeine and is usually associated with an "energy crash" several hours after taking a large dose.

L-Theanine is an amino acid found in tea. It has calming effect, induces relaxation, prevents depression, and improves the mood. It helps in maintaining the ideal blood pressure and reduces the risk of heart attack. It is beneficial in maintaining the brain functions and improves focus, alertness, and concentration. It increases the production of dopamine that helps in curbing the appetite and cravings. L-Theanine also improves the metabolism that aids in the burning of fat. L-Theanine also improves the immune function that protects the body against bacterial and viral infections. It also aids in regulating the blood sugar and blood cholesterol levels.

L-Tyrosine is a common amino acid and a para-isomer of tyrosine. It is deemed organic because of the carbon atom present and it is nonessential to survival, but works as a building block of protein. It is also viewed as a precursor of dopamine, which has several effects, like offsetting fatigue, mental and physical, as well as increasing the impression of well being. When the amino acid phenylalanine is broken down, L-Tyrosine can be won completely naturally. Besides being a precursor of the aforementioned neurotransmitter dopamine, L-Tyrosine is also deemed a precursor to some adrenal hormones, namely epinephrine and norepinephrine. In body building circles this supplement is popular to offset fatigue after a hard training or competition, but also to raise mental alertness while working out.

Norambrolide, or fermented salvia sclarea leaf extract. Norambrolide is thought to increase cAMP (cyclic adenosine monophosphate) levels in the body through the stimulation of the "adenylate cyclase" (AC) enzyme. This stimulation is believed to help activate increased fat burning.

Vitamin B12 helps maintain different forms of cells in the human body. For example, practices such as formation, maintenance and repair of red blood cells largely depend on Vitamin B12. It also takes care of the nerve cells in the body, helping maintain a strong nervous system. It is a key entity for regular formation of DNA in the body. In case of its deficiency in the body, abnormal cell formation, called megaloblasts, occur, which can cause anemia in the body. It is a good source of relieving the body from fatigue and weakness. Cyanocobalamin also helps reduce the cholesterol levels in the body. It is efficacious in treatment of Alzheimer's disease.

Yerba Matte Pronounced, YARE-ba MAH-tay, yerba mate is a shrub that belongs to the holly family. A Key Element in Xenadrine NRG Yerba mate contains the following vitamins, minerals and additional compounds: Vitamin A to Vitamin C Vitamin E Vitamin B1 Vitamin B2 Vitamin Niacin Vitamin B5 Vitamin B complex Minerals: Calcium Iron Manganese Magnesium Potassium Phosphorus Selenium Additional Compunds: Flavonols Polyphenols Antioxidants Pantothenic Acid and more The leaves of yerba mate have been found to offer strength while the stems inspire energy.