title: Levonorgestrel intrauterine system works best for heavy periods.
mesh_terms: D005260:Female; D006801:Humans; D007436:Intrauterine Devices, Medicated; D016912:Levonorgestrel / Q000627:therapeutic use*; D008595:Menorrhagia / Q000188:drug therapy*; D011372:Progestins / Q000627:therapeutic use*; D016896:Treatment Outcome
chemical_list: D011372:Progestins; D016912:Levonorgestrel