Premier Research

This study tested a new vaginal ring designed to prevent pregnancy by releasing low doses of two hormones. It involved about 1,200 women who used the ring for one year to see how well it worked, how safe it was, and how it affected their menstrual cycles. The goal was to gather d…

This study tested whether a daily pill could temporarily lower sperm count in men to prevent pregnancy. Healthy men took different doses of the experimental drug, either alone or with another hormone, for 12 weeks. Researchers measured sperm counts and monitored for side effects …

This study tested a new type of birth control: a weekly skin patch that releases the hormone levonorgestrel. About 120 healthy women tried one of two different dose patches for 11 weeks to see how well it prevents pregnancy, how safe it is, and how it affects the body. Researcher…

This was a very early study to check the safety of a potential new male birth control pill called 11β-MNTDC. Researchers gave 12 healthy men single, increasing doses of the pill to see how their bodies reacted and if it was safe. They also tested whether taking the pill with or w…

This study tested an experimental female condom that was not yet FDA-approved. It aimed to see how well it prevented pregnancy and sexually transmitted diseases, how safe it was, and how much women liked using it. About 500 healthy women across the US used it as their main birth …

This study tested a new vaginal ring that releases hormones to prevent pregnancy. It involved 385 healthy women aged 18-35 who used the ring for one year. Researchers compared two different usage schedules to see how well the ring worked and how it affected women's monthly cycles…