| Conditions | Interventions | Sponsor/Collaborators | Phases | Start Date | Last Updated |
| HIV|Contraception | Drug: Levonorgestrel|Drug: Efavirenz | University of Nebraska|Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)|Infectious Diseases Institute, Uganda|University of Liverpool|Feinberg School of Medicine, Northwestern University | Phase 2 | 2016-11-01 | 2016-10-24 |
| Adenomyosis | Procedure: Placement of levonorgestrel-releasing intrauterine system | Peking Union Medical College Hospital | | 2006-12-01 | 2017-01-19 |
| Epilepsy|Contraception | Drug: levonorgestrel IUS | Columbia University|Bayer | Phase 4 | 2011-08-01 | 2015-12-14 |
| Pregnancy, Unplanned|Pregnancy; Accident | Drug: Ulipristal acetate|Device: levonorgestrel IUS | Washington University School of Medicine|William and Flora Hewlett Foundation|University of Colorado, Denver|Planned Parenthood Federation of America|University of Rochester | 2012-12-01 | 2015-12-09 |
| HIV|Contraception | Drug: Levonorgestrel|Drug: Nevirapine|Drug: Efavirenz | University of Nebraska|Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)|Makerere University|University of Liverpool | Phase 2 | 2013-06-01 | 2016-03-31 |
| Obesity | Drug: Levonorgestrel 1.5mg by mouth once | University of Southern California|Society of Family Planning | | 2013-04-01 | 2016-10-24 |
| Contraception | Drug: Levonorgestrel IUD | University of Utah|Society of Family Planning|University of New Mexico | Phase 4 | 2014-01-01 | 2017-02-02 |
| Contraception | Device: Levonorgestrel-releasing IUD (Mirena) | University of Pittsburgh | | 2007-05-01 | 2016-05-17 |
| Emergency Contraception | Drug: Copper IUD|Drug: Levonorgestrel IUD | University of Utah | | 2013-07-01 | 2016-08-04 |
| Contraception | Drug: Levonorgestrel IUS (Mirena, BAY86-5028) | Bayer | | 2007-05-01 | 2014-01-08 |
| Healthy | Drug: levonorgestrel | FHI 360 | Phase 3 | 2010-01-01 | 2013-08-22 |
| Endometriosis | Drug: Levonorgestrel|Drug: Etonogestrel | University of Campinas, Brazil | Phase 4 | 2015-07-01 | 2015-06-23 |
| Contraception | Drug: LNG20|Drug: Mirena | Medicines360 | Phase 3 | 2009-11-01 | 2016-12-14 |
| Contraceptive Implant Utilization|Lactation | Device: Jadelle|Device: Jadelle | University of California, San Francisco|Mulago Hospital, Uganda|Makerere University | Phase 4 | 2015-01-01 | 2016-07-15 |
| Pregnancy | Drug: Copper T380 IUD|Drug: Oral levonorgestrel | University of Utah|Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)|Society of Family Planning | 2009-10-01 | 2017-02-02 |
| Contraception | Dietary Supplement: Placebo Control (Placebo Herb)|Dietary Supplement: St. John's Wort|Drug: Levonorgestrel | University of Utah|National Center for Complementary and Integrative Health (NCCIH) | Phase 4 | 2005-08-01 | 2015-07-15 |
| Hyperplasia|Endometrial Cancer | Device: Levonorgestrel IUD | M.D. Anderson Cancer Center | Phase 2 | 2008-11-01 | 2016-09-07 |
| Healthy | Device: Levonorgestrel-releasing intrauterine system (LNG-IUS)|Device: Levonorgestrel-releasing intrauterine system (LNG-IUS) | University of Chicago | | 2007-05-01 | 2013-04-01 |
| Contraception | Drug: Levonorgestrel IUS (Mirena, BAY86-5028) | Bayer | Phase 3 | 2016-12-01 | 2017-03-01 |
| Estimating Rates of Expulsion | Device: Levonorgestrel Intrauterine Device | Maine Medical Center Research Institute | Phase 4 | 2010-08-01 | 2011-08-01 |
| Contraception | Drug: Levonorgestrel (BAY98-7196) | Bayer | Phase 3 | 2015-05-01 | 2016-08-17 |
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