Alanine is a nonessential amino acid used by the body to build proteins. Alanine is present in prostate fluid, and it may play a role in supporting prostate health. One study, involving 45 men with benign prostatic hyperplasia, found that 780 mg of alanine per day for two weeks and then 390 mg for the next two and a half months, taken in combination with equal amounts of the amino acids glycine and glutamic acid, reduced symptoms of benign prostatic hyperplasia; this work has been independently confirmed.

Where is it found? As with the other amino acids, excellent sources of alanine include meat and poultry eggs, and products. Some protein-rich plant foods also supply alanine.

Who is likely to be deficient? Since alanine is synthesized in the body and is also provided by most foods that are sources of protein, deficiencies are unlikely to occur.

Are there any side effects or interactions? 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.

At the time of writing, there were no well-known drug interactions with alanine.

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