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Supplements » Cysteine



Cysteine: Cysteine is one of a number of nonessential amino acids, which make up the foundation and structure of protein in the body and have many important functions. The body naturally makes cysteine. It is also available naturally in pork, poultry, cheeses, granola, oats, and yogurt and in supplements in the form of N-acetyl-L-cysteine.

Adequate Amounts Claimed As Beneficial For Conditions: Cysteine

Adequate amounts of Cysteine are claimed to be potentially beneficial for:

Adequate Amounts Claimed As Preventative For Conditions: Cysteine

Adequate amounts of Cysteine are claimed to be potentially preventative for:

Toxicity/Overdose Risks For Supplement Or Excessive Intake: Cysteine

Excessive intake of Cysteine may involve the following risks:

  • Toxicity in some forms of cysteine, including D-cysteine, D-cystine, and 5-methyl cysteine
  • Nausea
  • Vomiting
  • Diarrhea
  • Hart disease
  • Toxicity leading to death
  • Seizures
  • Supplements not recommended for people with kidney disease
  • Taking one type of amino acid for extended periods may affect the balance and function of others
  • Possible allergic reaction in some people
  • Possible interactions with other supplements and medications
  • Consult with your healthcare provider before using any supplements, herbal remedies, and alternative therapies

Descriptions of Cysteine

Cysteine: A non-essential sulfur-containing amino acid in humans, related to cystine, Cysteine is important for protein synthesis, detoxification, and diverse metabolic functions. Found in beta-keratin, the main protein in nails, skin, and hair, Cysteine is important in collagen production, as well as skin elasticity and texture. Also required in the manufacture of amino acid taurine, Cysteine is a component of the antioxidant glutathione, and plays a role in the metabolism of essential biochemicals such as coenzyme A, heparin, and biotin. (NCI04)
Source: Diseases Database

Cysteine : primary aminoacid with the side group -CH2SH, capable of forming disulfide bonds (cystine) with other cysteine residues to stabilize protein tertiary and oligomeric structure.
Source: CRISP

Cysteine: Other Names

Other names for this supplements (Cysteine) include:

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