April 2017 in “Journal of Pharmaceutical Investigation” Indole-based compounds improved ovarian health in rats with PCOS, with L-Tryptophan and Tryptophol being most effective.
249 citations
,
April 2002 in “The FASEB journal” Human skin can make serotonin and melatonin.
20 citations
,
February 1991 in “Archives of dermatology” High doses of tryptophan may cause eosinophilic fasciitis.
220 citations
,
August 1988 in “Clinical endocrinology” Melatonin may help with sleep issues, depression, and cancer, but more research is needed.
84 citations
,
July 2003 in “European journal of biochemistry” Mouse skin can produce and process serotonin, with variations depending on hair cycle, body location, and mouse strain.