Cysteine is one of the essential amino acids that is not naturally produced in the body but is obtained from food and dietary sources, according to the National Institutes of Health. Amino acids are organic compounds that help make protein. After protein has been processed and digested, amino acid is left as a byproduct. Other than protein synthesis, amino acids also help with food breakdown, normal growth and development. Good sources of cysteine include meat products, milk, eggs and nuts.
Antioxidant Properties
According to the National Center for Complementary and Alternative Medicine, cysteine has antioxidant properties. Substances with antioxidant properties help prevent potentially disease-producing cell damage that results from natural bodily processes as well as exposure to certain chemicals, toxins and free radicals. Cysteine can help minimize the body's oxidative damage and improve immune function.
Remedy for the Common Cold
Cysteine has properties that can help relieve the common cold, according to KidsHeath.org. Cysteine has mucus-thinning properties that can ease nasal congestion. Eating chicken soup can ease cold symptoms because chicken is a good source of essential amino acids, particularly cysteine.
Food Additive
According to the Food and Drug Administration, an important use of cysteine is as a food additive. Cysteine or L-cysteine is used in bread products, pastries and baked goods. It acts as a dough strengthener and conditioner to allow smooth mixing of ingredients and reduce stickiness.
Antidote for Acetaminophen Overdose
Cysteine can be used as an antidote for acetaminophen overdose, according to the National Institutes of Health. Acetaminophen, commonly known as Tylenol, is an analgesic. N-acetyl cysteine is given in cases of overdose to prevent severe liver damage that can lead to permanent liver failure
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