Melatonin loses its luster.
D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008550:Melatonin / Q000097:blood* / Q000627:therapeutic use; D007319:Sleep Initiation and Maintenance Disorders / Q000188:drug therapy
D008550:Melatonin