The best replacement for cysteine is cystine.

The best alternatives to cysteine are rated as following:
★★★★★  cystine
★  nac
★  l-cysteine
★  n-acetyl cysteine
★  glutathione
★  n acetylcysteine
★  cysteine
★  methionine
  n-acetyl l-cysteine
  homocysteine
  acetylcysteine
  l-cystine
  n cysteine
  serine

Your alternative for cysteine is not listed? Suggest!
Speaking about cysteine, one probably shouldn't forget about lead acetate.

Other search terms related to cysteine and their ratings are:
★★★★★ lead acetate
★★★ ninhydrin
★★ iodoacetate
★ performic acid
You have in mind a companion for cysteine and it is not yet here? Propose!



Google Trends

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cysteine
cystine
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