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Aspartic Acid

Other name(s):

aminosuccinic acid

Unsubstantiated claims

Please note that this section reports on claims that have NOT yet been substantiated through scientific studies.

Some athletes claim aspartic acid improves stamina. Aspartic acid may also help improve the function of the immune system, and may play a role in protecting against toxins, and neural and brain disorders. Aspartic acid reportedly helps treat chronic fatigue.

Recommended intake

Amino acids (AAs) are available as individual AAs or in proprietary AA combinations, as well as part of multi-vitamin formulas, proteins, and food supplements. The forms include tablets, fluids, and powders. However, adequate protein in the diet should provide a sufficient source of all amino acids.

There are no conditions that increase the nutritional requirements for aspartic acid. Aspartic acid is not considered an essential amino acid, meaning it can be produced from other substances in the body 

Side effects, toxicity, and interactions

The use of a single amino acid supplement may lead to negative nitrogen balance, decreasing the metabolic efficiency and increasing the workload of the kidneys. In children, taking single amino acid supplements may also harmfully affect growth parameters.

Always avoid taking individual amino acids in high dosage for prolonged periods.

Women who are pregnant or breastfeeding should not use aspartic acid supplements.

Additional information

Click here for a list of reputable websites with general information on nutrition.

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