Amino acids

Glycine is a conditionally essential amino acid that works as both an inhibitory and excitatory neurotransmitter. Glycine is chemically one of the simplest and at the same time most ubiquitous of all amino acids. It is found in proteins of all life forms,

Life Extension Theralac®, 30 Capsules + Truflora, 32 V-caps

Source Naturals L-Tyrosine, 500 Mg 100 Tablets, 2-pack

L-Theanine is the predominant amino acid in tea (natural tea extract), which produces calming effects in the brain by increasing serotonin and dopamine levels and blocking the binding of L-glutamic acid to glutamate receptors. This can work as a natural s

L-phenylalanine is an essential amino acid which is converted in the liver into L-tyrosine. L-tyrosine in turn is converted in the brain and the adrenal glands into L-DOPA, which is further converted into the neurotransmitters dopamine, norepinephrine (no

Life Extension L-Taurine Powder, 300 Grams, 3-pack

Life Extension L-carnitine, 500 Mg 30 Vegetarian Capsules, 10-pack

Life Extension L-Arginine Caps, 700 Mg 200 Vegetarian Capsules, 3-pack

Life Extension Acetyl-l-carnitine Arginate

Taurine is the most abundant intracellular amino acid in the human body and is found particularly in the excitable tissues of the central nervous system, where it is thought to have a regulating effect and can help to reduce stress. It is also used as a h

Optimized Carnitine contains carnitine, a natural amino acid derivative that is found in almost every cell of the human body, helping to burn fatty acids to produce fuel for the mitochondria, which are responsible for the production of cellular energy. H

Tryptophan is an essential amino acid and a precursor of serotonin, a neurotransmitter that is associated with positive mood, relaxation and restful sleep. Adequate supplies of tryptophan are required to ensure optimum serotonin levels.