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Some foods that contain L-Valine include leafy vegetables, kidney beans, poultry and milk. Some of the benefits of L-Valine include improvement in insomnia and nervousness. It is also shown to improve disorders of the muscles, and is effective as an appetite suppressant.
Beef and other red meats are also high in valine. A 3 oz. serving of beef provides 1,028 mg of valine. Tuna is also high in valine, delivering 1,117 mg in every 3 oz. portion.hoto Credit naito8/iStock/Getty Images. Valine is one of the nine essential amino acids that your body requires for healthy cell and organ functioning. As an essential amino acid, valine can only be obtained through food sources, as your body isn't capable of synthesizing the amino acid on its own.