Alanine is a "nonessential" amino acid—which means it is not manufactured by the body, so it is important to get alanine through food or supplements, as the body needs it to build proteins.
Most people do not need to supplement with alanine; for those who do use this amino acid as a supplement, appropriate amounts should be determined with the consultation of a physician.
As with the other amino acids, excellent sources of alanine include meat and poultry, fish, eggs, and dairy products. Some protein-rich plant foods also supply alanine.
Since alanine is synthesized in the body and is also provided by most foods that are sources of protein, deficiencies are unlikely to occur.1
Alanine is free of side effects for the vast majority of people who take it; however, people with kidney or liver disease should not consume high intakes of amino acids without consulting a healthcare professional.
Last Review: 07-01-2014
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