title: Incidence of unwanted effects of dihydrocodeine bitartrate in healthy volunteers.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002986:Clinical Trials as Topic; D003061:Codeine / Q000009:adverse effects*; D003248:Constipation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013644:Tartrates / Q000009:adverse effects*; D014717:Vertigo
chemical_list: D013644:Tartrates; D003061:Codeine