(-)-13-Ethyl-17-hydroxy-18,19-dinor-17alpha-pregn-4-en-20-yn-3-one{}13-beta-Ethyl-17alpha-ethynyl-17beta-hydroxygon-4-en-3-one{}13-Ethyl-17-alpha-ethynyl-17-beta-hydroxy-4-gonen-3-one{}13-Ethyl-17-alpha-ethynylgon-4-en-17-beta-ol-3-one{}17-alpha-Ethinyl-13-beta-ethyl-17-beta-hydroxy-4-estren-3-one{}17-alpha-Ethynyl-13-ethyl-19-nortestosterone{}17-Ethynyl-18-methyl-19-nortestosterone{}17alpha-Ethynyl-13beta-ethyl-3-oxo-4-estren-17beta-ol{}17alpha-Ethynyl-17-hydroxy-18-methylestr-4-en-3-one{}17alpha-Ethynyl-18-homo-19-nortestosterone{}18-Methyl-17-alpha-ethynyl-19-nortestosterone{}18-Methylnorethisterone{}D(-)-Norgestrel{}Jadelle{}Levonelle{}Levonorgestrelum{}Levonova{}Microlut{}Microluton{}Microval{}Mirena{}NorLevo{}Plan b{}Postinor{}(+-)-Norgestrel{}Ovrette{}(-)-13-Ethyl-17-hydroxy-18,19-dinor-17a-pregn-4-en-20-yn-3-one{}(-)-13-Ethyl-17-hydroxy-18,19-dinor-17α-pregn-4-en-20-yn-3-one{}13-b-Ethyl-17a-ethynyl-17b-hydroxygon-4-en-3-one{}13-Β-ethyl-17α-ethynyl-17β-hydroxygon-4-en-3-one{}13-Ethyl-17-a-ethynyl-17-b-hydroxy-4-gonen-3-one{}13-Ethyl-17-α-ethynyl-17-β-hydroxy-4-gonen-3-one{}13-Ethyl-17-a-ethynylgon-4-en-17-b-ol-3-one{}13-Ethyl-17-α-ethynylgon-4-en-17-β-ol-3-one{}17-a-Ethinyl-13-b-ethyl-17-b-hydroxy-4-estren-3-one{}17-Α-ethinyl-13-β-ethyl-17-β-hydroxy-4-estren-3-one{}17-a-Ethynyl-13-ethyl-19-nortestosterone{}17-Α-ethynyl-13-ethyl-19-nortestosterone{}17a-Ethynyl-13b-ethyl-3-oxo-4-estren-17b-ol{}17Α-ethynyl-13β-ethyl-3-oxo-4-estren-17β-ol{}17a-Ethynyl-17-hydroxy-18-methylestr-4-en-3-one{}17Α-ethynyl-17-hydroxy-18-methylestr-4-en-3-one{}17a-Ethynyl-18-homo-19-nortestosterone{}17Α-ethynyl-18-homo-19-nortestosterone{}18-Methyl-17-a-ethynyl-19-nortestosterone{}18-Methyl-17-α-ethynyl-19-nortestosterone{}Levonorgestrel alcala brand{}Levonorgestrel hexal brand{}Norplant{}Paladin brand OF levonorgestrel{}Vikela{}Wyeth brand OF levonorgestrel{}Duofem{}L-Norgestrel{}Aventis pharma brand OF levonorgestrel{}Berlex brand OF levonorgestrel{}HRA brand 1 OF levonorgestrel{}Hexal brand OF levonorgestrel{}Levonorgestrel paladin brand{}Levonorgestrel wyeth brand{}Norplant 2{}Alcala brand OF levonorgestrel{}Capronor{}Cerazet{}D-Norgestrel{}HRA brand 2 OF levonorgestrel{}Norplant-2{}Schering brand 3 OF levonorgestrel{}L Norgestrel{}D Norgestrel{}Levonorgestrel berlex brand{}Norgeston{}Norplant2{}Schering brand 1 OF levonorgestrel{}Schering brand 2 OF levonorgestrel{}Women's capital brand OF levonorgestrel{}Levonorgestrel