Category Archives: Dopamine

L-Phenylalanine and DL-Phenylalanine: Differences

Posted on June 20, 2015 by Robert Barrington

L-phenylalanine is an essential amino acid required for the synthesis of proteins. In addition, L-phenylalanine is the substrate for the formation of the catecholamine neurotransmitters and hormones. The catecholamines are adrenaline, noradrenaline and dopamine, and in the brain they play … Continue reading →

Posted in Adrenergic System, Catecholamines, DL-Phenylalanine, Dopamine, L-phenylalanine, L-tyrosine, Stress | Comments Off on L-Phenylalanine and DL-Phenylalanine: Differences

The Role of Dopamine in Mood

Posted on April 25, 2015 by Robert Barrington

Dopamine is a neurotransmitter in the brain that is synthesised in a chemical pathway originating from the amino acid L-phenylalanine. The enzyme phenylalanine hydroxylase converts L-phenylalanine to L-tyrosine, and then the enzyme tyrosine hydroxylase converts L-tyrosine to L-DOPA. Finally, L-DOPA … Continue reading →

Posted in Dopamine, Iron, L-tyrosine | Comments Off on The Role of Dopamine in Mood