3-Acetyl-7-Oxo-Dehydroepiandrosterone is a popular and new addition to many diet formulations because it helps burn more calories. It does this by encouraging the basal metabolism rate to climb so that more calories are burned both at rest and while working. It also works to keep fat from being stored. Of the class of DHEA steroid like compounds, this is the only one with little or no side effects and has been tested as a metabolism enhancer in human, double blind studies successfully adding credence to any claims made. It has been tested in various doses in both human and animal studies and the clinical trials done on humans found it tested safe at 200mg a day.

5-HTP is a compound formed in the body type of the amino acid tryptophan. It is an originator to the hormone and the melatonin neurotransmitter serotonin 5-HTP supplements have become most loved these days, as it is believed that providing 5-HTP to the body in the form of a pill can boost the serotonin levels in the body, similar to antidepressants that are believed to raise the amount of serotonin present in the brain. Some studies have indicated that 5-HTP might prevent migraines and decrease the regularity and sternness of migraines. Some side effects of 5-HTP are dizziness, nausea, and diarrhea. Sometimes an allergic reaction to the drug may occur.

Acetyl L-Carnitine is also known as ALCAR, and has been widely popularized as the superior form to L-Carnitine pertaining to the bioavailability. Carnitine is the quaternary ammonium compound which is being used to move fatty acids out of the cytosol and into the mitochondria when the fats are being broken down, when these are needed to generate additional metabolic energy. The biologically active form of Carnitine is L-Carnitine; Acetyl L-Carnitine is the acetylated form of L-Carnitine and is also known as Acetylcarnitine. L-Carnitine is generally derived from lysine and methionine, which are both amino acids. While the neuro-protecting properties of Acetyl L-Carnitine have been tested on lab animals and some proof was obtained, the role of Acetyl L-Carnitine as a weight loss agent still needs some testing in studies on humans.

L-Tyrosine is a protein non-essential building block Although non-essential it is important for the structure of body proteins. It has a direct effect on neurotransmitters.