L-Methionin
Smythies; J. R. & Halsey; J. H.: Treatment of Parkinson's disease with L-methionine; Southern Medical Journal; 77; p. 1577; 1984.
SAM
Alpert JE, Papakostas G, Mischoulon D et al. S-Adenosyl-L-Methionine (SAMe) as an Adjunct for Resistant Major Depressive Disorder: An Open Trial Following Partial or Nonresponse to Selective Serotonin Reuptake Inhibitors or Venlafaxine. J Clin Psychopharmacol 2004;24;6:661-65.
See also "Amino acids, scientific references"
