5-HTP may be useful if you are overweight as many believe that weight gain may be caused by decreased amounts of tryptophan to 5-HTP, which causes low serotonin levels, which may cause constant hunger. Adding 5-HTP to your diet may reduce this deficiency and remove these feelings of hunger.

Acetyl L-Carnitine is a form of L-carnitine, only acetylated. It is a very popular dietary supplement derived from amino acids, methionine and lysine. L-carnitine helps fatty acids to cross the membrane of the mitochondria and become available for usage. ALCAR, which is an alternate name for acetyl L-carnitine, is currently under research for possible treatment of Parkinson’s disease and cerebral ischemia. Neuroprotective benefits have been already attributed to ALCAR, but also assistance in cases of Peyronie’s disease, strokes and in treatment of depression. In food it is very much present in Beef and other red meats, in smaller quantities in mushrooms and carrots. Scientific studies have verified that regular supplements of L-carnitine improve the energy metabolism and can promote the neurotransmitter functions in brains of elderly people.

Caffeine is a powerful and very common alkaloid supplement used in German American Technologies Jetfuel primarily to increase the body’s ability to lose weight quickly, boost energy and stimulate the brain into more activity with better clarity. It also fuels the body’s metabolism for increased fat burning qualities. This allows users to have more stamina for exercise and more focus for weight loss initiatives. Caffeine anhydrous is found naturally in many different beans and plants and works successfully as a stimulating supplement for those needing increased energy, focus, and alertness. When taken as a supplement for health or weight loss reasons, caffeine anhydrous should not be combined with other traditional forms of caffeine, such as soft drinks, energy drinks, coffee, or tea, because the supplement form is concentrated and powerful in itself.

Evodiamine has been used in Chinese medicine and by Chinese herbalists for centuries for weight loss purposes. It is an extract from a plant, Evodia or Tetradium, actually a tree genus of the family Rutaceae. The bee bee tree, as it is called besides Euodia and Evodia, provide a bioactive alkaloid that the Chinese have nicknamed Wu-Chu-Yu. This extract not only can interact with UCP1, a thermogenic protein, which as a consequence burns energy as heat, but also has shown in studies on mice to reduce the fat uptake. Evodiamine seems to increase the resting temperature of humans, whereby increased fat and calories are burned in order to supply the heat. Deemed a breakthrough in thermogenesis, evodiamine is subject of several clinical studies.

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

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.

Guggulsterone is a plant sterol found in the resin of the guggul plant, Commiphora mukul. It acts as an antagonist of the farnesoid X receptor, which was earlier believed to result in decreased cholesterol synthesis in the liver.

Hoodia Gordonii is an extract from the Hoodia plant of South West Africa. It is one of the fore runners in weight loss programs. Quenching thirst and providing energy are two of the numerous uses of the plant extract. The extract reduces gastric acid output in the stomach to a large extent, ranging from 40 – 60%. Aside from repressing hunger, Hoodia raises the overall energy levels in the body and will make a person feel completely healthy – both mentally and physically. Hoodia Gordonii is known to be extremely effective and does not have side effects such as dizziness, causing an increase of the heart beat or body temperature and sleeplessness. Hoodia Gordonii, however, should not be used during pregnancy and by nursing mothers.

Medium Chain Triglycerides (MCT) are fatty acids which are shorter in length. They therefore are similar to carbohydrates and get easily digested and absorbed and get used up as energy. It is used as an alternative source of food by patients who are unable to digest normal oils and fats. Medium chain triglycerides are water-soluble and because if their short length get absorbed into the blood stream quickly. From the bloodstream it gets directly transported to the liver. It is an immediate source of energy and only a miniscule percent of it gets converted to body fat. It is naturally found in coconut oil, milk fat and in palm oil. Medium chain triglycerides are available in capsule and in liquid form; this is obtained through the process of lipid fractionation.

Octopamine is a biogenic substance which is containing an amine group, apparently related to noradrenaline, which is a catecholamine functioning as both, neurotransmitter and a hormone. Similar to norepinephrine, which is another name for noradrenaline, octopamine may act as a stress hormone, triggering increased heart rate, energy consumption and blood flow, even the blood pressure. One side effect of octopamine is apparently the release of fat from the adipocytes, which are the fat cells where excess energy is being stored. This side effect prompted the use of octopamine as a dietary supplement aimed at weight loss, but used in combination with other stimulants. Octopamine has been discovered in the middle of the twentieth century, but the use as a fat removal agent is very recent.

Synephrine HCL is a stimulant that bares close similarities to caffeine, it aids in increasing metabolic rate as well as burning excess calories.

Vinpocetine- The lesser periwinkle plant named Vinca Minore consists of Vincamine, which is found in its leaves and Vinpocetine is derived from this natural substance found in the plant. In countries such as Japan and Europe, Vinpocetine is a prescribed medicine. It is popularly available in the online stores and countries such as Canada and the US as an effective supplement for diet. Vinpocetine is a great medicine in order to protect oneself from brain dementia. It has also been found to help treat Alzheimer’s disease. However, there is no strong recent evidence to prove its effect on the treatment of Alzheimer’s disease. Overall, it’s great to boost the brain. However, it has certain side effects such as anxiety, insomnia, indigestion, dry mouth, headache and many more.

Yohimbine HCL is the active chemical component of the medicinal herb Pausinystalia yohimbe. It is a stimulant drug and is reportedly an aphrodisiac. According to the National Institute of Health (NIH), the standardised form of this chemical is Yohimbine hydrochloride (HCL) and is available as a prescription drug in the United States. Research has shown that yohimbine hydrochloride is effective as a treatment for male impotence. However while yohimbine HCL has been used as a prescription medicine to treat erectile dysfunction controlled studies suggests conflicting results. Apart from male sexual dysfunction, yohimbine HCL has also been used to treat the side effects of antidepressants like female hyposexual disorder etc. It is also used to recall memories in the treatment of post-traumatic-stress-disorder. While there are several uses for yohimbine HCL, there are several side effects too. These include high blood pressure, insomnia, panic attacks, hallucinations, headaches, renal failure, heart disease etc.