L-Theanine is a free form amino acid clinically proven to reduce stress, and widely known to improve the quality of sleep and reduce the harsh side effects of caffeine. L-Theanine is historically known as a component of many teas and research suggests it may work synergistically with GABA to increase the inhibitory neurotransmitter process in the brain. See MySleep.

L-Tyrosine is an amino acid that is necessary for the structure of almost all of the proteins in the body. It acts as a precursor for many neurotransmitters, including L-Dopa and is known to ease the adverse effects of physical and emotional stress. See the product MySleep for more information.
Low-density lipoprotein (LDL) is a class of animal lipoprotein particles that varies in size and contents which carries fatty acid molecules in blood and around the body). It is the final stage of VLDL (very low-density lipoprotein) which is produced by the liver. The LDL contains the apolipoproteins B-100. It also contains antioxidative vitamins such as vitamin E or carotinoids. It is commonly referred to as bad cholesterol as high LDL levels can lead to cardiovascular disease.
Leucine is one of the 20 common amino acids coded for by DNA. It is isomeric with isoleucine. Nutritionally, in humans, leucine is an essential amino acid. Leucine is the most common amino acid found in proteins, and is essential for optimal growth during infancy and childhood. In adults it is essential for maintaining nitrogen equilibrium.

It is suspected that Leucine plays a part in maintaining muscles by equalizing the synthesis and breakdown of proteins. The major food sources of leucine are whole grains and milk products. Eggs, pork, beef, chicken, pulses, soybeans, and leaf vegetables are good sources of leucine
A general classification to denote water-insoluble compounds, such as fatty acids and sterols.
Lysine is an essential amino acid, which means that it is essential to human health but cannot be manufactured by the body. For this reason, lysine must be obtained from food. Amino acids are the building blocks of protein.

Lysine is important for proper growth and it plays an essential role in the production of carnitine, a nutrient responsible for converting fatty acids into energy and helping to lower cholesterol. Lysine appears to help the body absorb and conserve calcium and it plays an important role in the formation of collagen, a substance important for bones and connective tissues including skin, tendon, and cartilage.