Ovitrelle is a medicine used in women who have received treatment to stimulate their ovaries, to trigger ovulation (the release of an egg from the ovaries) and the development of a special structure on the ovary (the corpus luteum) that helps pregnancy. Ovitrelle is a medicine used in women who have received treatment to stimulate their ovaries, to trigger ovulation (the release of an egg from the ovaries) and the development of a special structure on the ovary (the corpus luteum) that helps pregnancy.