Grandma's Isoleucine
Essential Amino Acid Guide

photo of brown egg with top cracked open a natural source of isoleucine photo of a pile of almonds a natural source of isoleucine photo of a dish of seafood a natural source of isoleucine

Isoleucine, one of the essential amino acids, is needed for hemoglobin formation and also stabilizes and regulates blood sugar and energy levels. It is metabolized in muscles tissue. It is one of the three branched-chain amino acids.

These amino acids are valuable for athletes because they enhance energy, increase endurance, and aid in the healing and repair of muscle tissue.

Isoleucine has been found to be deficient in people suffering from many different mental and physical disorders. A deficiency of this essential amino acid can lead to symptoms similar to those of hypoglycemia.

Food sources of isoleucine include almonds, cashews, chicken, chickpeas, eggs, fish, lentils, liver, meat, rye, most seeds, and soy protein.

This essential amino acid is also available in supplemental form. Supplemental isoleucine should always be taken with correct balance of the other two branched-chain amino acids, leucine and valine -approximately 2 milligrams, each of leucine and valine for each milligram of isoleucine.

Combination supplements that provide all three of the branched-chain amino acids are available and may be more convenient to use.


The statement's made here have not been approved by the Food and Drug Administration. These statements are not intended to diagnose, treat or cure or prevent any disease. This notice is required by the Federal Food, Drug and Cosmetic Act.

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