Definition of Phenylalanine:

Essential amino acid needed for the normal growth of infants and children.  It is also needed for normal protein use all through life.  Precursor to tyrosine which is used to manufacture certain hormones (epinephrine, norepinephrine, dopa, dopamine) which are important for the transmission of nerve impulses.  As neurotransmitters, these substances are believed to influence mood, appetite control and memory.  It is found in large amounts in milk, eggs, and other common foods.

Topics Related to Phenylalanine

Aspartame/Neotame Side-Effects

...the condition
“...It is a mixture of 40% aspartic acid, 50% phenylalanine, and 10% methanol (also known as wood alcohol – poison!)  Although there are no publicized studies to substantiate the risks of aspartame, there are many who suffer from adverse...”


...recommendation L-Phenylalanine
Phenylalanine can affect depression via three separate pathways...”
...recommendation Aspartame (Nutrasweet) Avoidance
“...Researchers have pointed out that increases in phenylalanine levels in the brain leads to a decreased level of the neurotransmitter serotonin, which leads to a variety of emotional disorders...”
...recommendation Amino Acid Profile
“...Low tyrosine or phenylalanine levels can result in abnormal levels of mood-regulating chemicals in the brain, such as dopamine and catecholamines...”
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More topics Related to Phenylalanine

L-Phenylalanine a treatment
“...People with phenylketonuria must not supplement phenylalanine.  Some research suggests that tardive dyskinesia patients may process phenylalanine abnormally...”

L-Tyrosine a treatment
“...Tyrosine is an aromatic amino acid, the hydroxylated form of the essential amino acid phenylalanine.  Tyrosine is a precursor to dopamine, noradrenaline, and adrenalin (epinephrine)...”
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More topics Related to Phenylalanine

Ochronosis / Alkaptonuria

...the condition
“...manifestation of alkaptonuria – a rather rare (one in 200,000 births) inherited disorder of protein metabolism characterized by an inability of the body to metabolize the amino acids tyrosine and phenylalanine.  It affects especially the large joints (hip, knees and vertebral column) by a progressive degenerative arthrosis...”


...related topic
“An inherited disease caused by a lack of an enzyme necessary for converting phenylalanine into a form the body can use.”

Rheumatoid Arthritis

...recommendation L-Phenylalanine
“The 'D' form of phenylalanine (DPA) has been used to treat chronic pain, including rheumatoid arthritis, with mixed effectiveness.”
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