The Xenadrine NRG Review

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 has in recent times received widespread popularity because of an energy drink. It is actually a climbing plant in the family related to maple and is native to the Amazon region, predominantly in Brazil. It is a flowering plant with big leaves, but the fruit is the most prominent component, not bigger than a coffee bean. Guarana fruit has about the double content of caffeine when compared to the coffee bean. Besides the cognitive and fatigue reducing effects of caffeine, guarana displays also other interesting properties, such as the assistance in a weight loss program; namely, guarana affects the perception of the satiation, making the person feel full sooner. Further antioxidant and antibacterial effects have been noted as well. In combination with linoleic acid, guarana has shown fat cell reduction effects in mice.

L-Theanine is very commonly found in tea and is an amino acid, biochemically related to glutamine. The psychoactive properties of theanine are derived from the ability to cross the blood brain barrier. It has been proven that theanine can reduce stress, promote relaxation and improve alertness and mood when imbibed together with caffeine, a natural combination found in any tea, especially green tea. Gamma-aminobutyric acid levels are increased, when theanine is ingested or imbibed, as are serotonin and dopamine levels. It is believed that l-theanine is aiding the immune system by strengthening the capacity of delta T cells. Laboratory tests have proven that blood pressure reduction and lowering of 5-hydroxyindoles in the brain are promoted by theanine.

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 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.