title: Pain and vitamin B1 therapy.
mesh_terms: D002986:Clinical Trials as Topic; D006261:Headache / Q000188:drug therapy; D006801:Humans; D010148:Intractable Pain / Q000188:drug therapy*; D013831:Thiamine / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D013831:Thiamine