title: Levonorgestrel is more effective, has fewer side-effects, than Yuzpe regimen.
mesh_terms: D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003281:Contraceptives, Postcoital; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D016912:Levonorgestrel; D012106:Research
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003281:Contraceptives, Postcoital; D016912:Levonorgestrel
keywords: Clinical Research; Comparative Studies; Contraception; Contraceptive Agents; Contraceptive Agents, Female; Contraceptive Agents, Postcoital; Contraceptive Agents, Progestin; Contraceptive Effectiveness; Contraceptive Methods; Family Planning; Fertility Control, Postcoital; Levonorgestrel; Oral Contraceptives; Research Methodology; Research Report; Studies; Use-effectiveness