No, Synarel is not meant for use to prevent pregnancy. If you miss doses of Synarel, your ovaries may release an egg (ovulation), and you could become pregnant. Becoming pregnant while using Synarel can harm the fetus. You must use a non-hormonal form of birth control (e.g., condoms, IUD, diaphragm with contraceptive jelly) while taking Synarel. Do not take birth control pills.