title: The long-term effects of combining carbidopa with levodopa for Parkinson's disease.
mesh_terms: D002230:Carbidopa / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D005260:Female; D006801:Humans; D006834:Hydrazines / Q000627:therapeutic use*; D007980:Levodopa / Q000627:therapeutic use*; D008134:Long-Term Care; D008297:Male; D010300:Parkinson Disease / Q000188:drug therapy*
chemical_list: D006834:Hydrazines; D007980:Levodopa; D002230:Carbidopa