Caffeine- The bitter, white crystalline xanthine alkaloid caffeine is found in tea, coffee, soft drinks, chocolates, pain relievers, and a variety of over the counter medications. It is a psychoactive stimulant drug that causes increased alertness by stimulating the central nervous system. For the same reason, many people feel more energetic after consuming it. It even elevates the mood but these effects do not last for long. The effects of caffeine usually last for about five to six hours, though caffeine sensitivity varies from person to person. It has been found that people who consume lot of caffeine on a daily basis soon develop less sensitivity and may need to increase their intake to enjoy the same effect. Being a diuretic, a person consuming caffeine may have to urinate more often.

Chromium.

Citrus Aurantium is a fruit from the citrus family. Although later replaced by the sweet orange in recognition, it has retained many practical uses both in home remedies and in food. Citrus Aurantium boosts up the metabolism, which converts fat deposits into energy. Extensive use may help to control weight and hold back the effects of obesity. It can work as an appetite suppressant to restrain overeating. Citrus Aurantium can help to reduce chest congestion and coughs. Citrus Aurantium is a potent energy booster.

Garcinia Cambogia- Gambooge, a subtropical version of the Garcinia genus and native to Indonesia, is the local name for garcinia cambogia. It bears a pumpkin like yellow coloured fruit, which extract, together with the rind, is in India a curry condiment. Extracts are also being used in several herbal appetite suppressants, but also in some energy providing products and supplements. In the body building community, besides the weight loss properties of garcinia cambogia, the main component, hydroxycitric acid, or HCA, seems to increase the levels of lipolysis in athletes. HCA may even prove to be more effective in combined use with carnitine and pyruvate. In India, garcinia cambogia was traditionally used to treat edema, constipation, irregular menstruation and against intestinal parasites. Further uses include combating rheumatism and bowel related troubles.

Guarana Extract is the extract of the guarana plant. It contains a significant amount of guaranine, a substance that is similar to caffeine found in coffee beans. It helps stimulate the adrenal glands and increase the production and release of hormones such as epinephrine, norepinephrine (adrenaline), and dopamine. This helps the metabolism of the body that enhances fat loss, and increases energy and endurance. It helps the body burn the fats to be used for energy. It aids in fighting stress, weakness and fatigue. As a stimulant, it also improves mental alertness, clarity, focus, concentration, and memory retention. Guarana also also improves the libido or sex drive in both men and women. Guarana also contains tannins that help prevent diarrhea and soothes the digestive system.

L-Carnitine - Carnitine is an ammonium compound. It is derived from two amino acids, namely lysine and methionine. Carnitine is needed to transport fatty acids, when they are removed from the storage in fat cells and used for additional energy. Carnitine used to be labeled Vitamin Bt, the biologically active form is named L-Carnitine. Food sources of carnitine are found in red meat and dairy products, but also in several nuts, seeds, legumes, cereals, pulses, other vegetables and some fruits like bananas. While the weight loss effectiveness of L-Carnitine is still in research, it is a proven fact that it increases the energy metabolism levels and that in elderly persons L-Carnitine significantly improves the neurotransmitter functions. It also improves the bone structure and has substantial antioxidant action.

White Willow Bark, or Salix alba, is a willow commonly found in Europe and adjacent parts of western and central Asia. The bark of the White Willow has been used for centuries against fevers and to ease pains and aches. Already Hippocrates wrote about the White Willow bark powder two thousand five hundred years ago. The active ingredient of the White Willow bark is called salicin, a relative to aspirin and chemical derivative of the salicylic acid. When ingested, salicin is converted to salicylic acid, a beta hydroxy acid. As a nutritional supplement, White Willow products are being propagated as weight loss additives, whereby the scientific community has yet to provide any corroboration to this allegation. Besides the well known anti inflammatory characteristics, any other uses have not been approved by the FDA.