St. John's Wort for wintertime blues.
D003080:Cold Temperature; D005260:Female; D006801:Humans; D008297:Male; D017060:Patient Satisfaction; D008517:Phytotherapy; D010946:Plants, Medicinal / Q000627:therapeutic use*; D016574:Seasonal Affective Disorder / Q000175:diagnosis / Q000188:drug therapy*; D012621:Seasons; D016896:Treatment Outcome