"With typical doses of 1 to 1.5 grams daily, the most commonly reported side effects have been gastrointestinal, such as nausea. There are rare reports of cystine renal stone formation, Single injections of L-cysteine (0.6-1.5 g/kg) into 4-day-old pups resulted in massive damage to cortical neurons, permanent retinal dystrophy, atrophy of the brain and hyperactivity."@en . "56-89-3"@en . . . . . . . . . . . . "L-alpha-Diamino-beta-dithiolactic acid"@en . . . . . "L-Dicysteine"@en . . . . . "(R,R)-3,3'-dithiobis(2-aminopropanoic acid)"@en . "Humans and other mammals"@en . . . . . . "A covalently linked dimeric nonessential amino acid formed by the oxidation of cysteine. Two molecules of cysteine are joined together by a disulfide bridge to form cystine. [PubChem]"@en . . "Certain conditions, e.g. an acetaminophen overdose, deplete hepatic glutathione and subject the tissues to oxidative stress resulting in loss of cellular integrity. L-Cystine serves as a major precursor for synthesis of glutathione."@en . . . "Peter Stehle, Peter Furst, Werner Fekl, \"N,N'-bis-L-amino acid-L-cystine-peptide containing amino acid preparations for oral parenteral nutrition.\" U.S. Patent US4968696, issued February, 1964."@en . . . . "approved"@en . . . . . . . . . "L-Cystine"@en . . "nutraceutical"@en . . . . . . . "\u03B2,\u03B2'-dithiodialanine"@en . " "@en . "It has been claimed that L-cysteine has anti-inflammatory properties, that it can protect against various toxins, and that it might be helpful in osteoarthritis and rheumatoid arthritis. More research will have to be done before L-cysteine can be indicated for any of these conditions. Research to date has mostly been in animal models."@en .