title: Safe and prophylactic.
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D003863:Depression / Q000188:drug therapy*; D005260:Female; D006801:Humans; D008094:Lithium / Q000008:administration & dosage*; D008297:Male; D008875:Middle Aged; D010919:Placebos
chemical_list: D010919:Placebos; D008094:Lithium