The Xenadrine NRG Review

Green Tea Extract- By increasing the body's metabolism, it is widely believed that green tea extract largely aids in weight loss.

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 , which is believed to relax the body while consuming high amounts of caffeine, yet stimulate alpha wave brain activity to maintain mental alertness.

L-Tyrosine is an amino acid that is nonessential. It is synthesized from the body from phenylalanine which is also an amino acid. L-Tyrosine has the power to have an effect on the neurotransmitters and this affects various health conditions including depression, mood disorders and Parkinson’s disease. Many such studies have proved that L-Tyrosine helps people having depression. It acts as a precursor and eases the effects of psychosocial, environmental and physical stress. L-Tyrosine turns into melanin by the skin cells and the dark pigment prevents the ultraviolet light from affecting. The thyroid hormones playing a significant role in the process of the body also contain tyrosine. L-Tyrosine is commonly found in all the dairy products, fish, oats, wheat, meat and also in all other protein containing foods. This is also found to be beneficial for people trying to withdraw alcohol. L-Tyrosine has not exhibited severe side effects, yet taking it should be recommended by doctors.

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 is a water-souble member of the vitamin B complex. Requirements are in the microgram range, which is lower than the milligram range of the other B vitamins. Vitamin B12 is involved in the production of red blood cells and is usually known as the anti-anemia vitamin.

Yerba Matte, actually yerba maté, as it is called in Brazil, or Ilex paraguariensis in Latin, is a small tree or a shrub which can grow to fifteen meters. It is found naturally in South America, mainly in south of Brazil, Argentina, Paraguay, Uruguay and Chile. Foliage is evergreen, and the flowers are rather small, additionally there is a smallish fruit of red color. A tea like brewing in warm water, not boiling, is a popular drink in the native area, similar social gathering is common, akin to tea time practice in the United Kingdom. Yerba matte has several xanthines alkaloids which are related to caffeine, but although chemically identical to caffeine the mate xanthine cocktail provides different results, for instance it relaxes smooth muscle tissue and stimulates heart tissue. Yerba Matte is a potent ingredient in Xenadrine NRG.