Aspartic Acid

March 21, 2017

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. It may also enhance your immune system. Aspartic acid may also protect you from toxins and neural and brain disorders. It may also help treat chronic fatigue.

Recommended intake

Amino acids (AAs) are available as individual AAs or in AA combinations. They also come as part of multi-vitamins, proteins, and food supplements. The forms include tablets, fluids, and powders.

Note that by eating enough protein in your diet, you get all of the amino acids you need.

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

Side effects, toxicity, and interactions

Using a single amino acid supplement may lead to negative nitrogen balance. This can decrease how efficient your metabolism is. It can also make your kidneys work harder. In children, taking single amino acid supplements may also cause growth problems.

You should not take high doses of individual amino acids for long periods of time.

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




March 21, 2017


McKee, Trudy. Biochemistry: The Molecular Basis of Life. 2008, 4th edition, pp. 123–143.

Reviewed By:  

Poulson, Brittany, RD,Wilkins, Joanna, R.D., C.D.