Ella blocks the effects of key hormones necessary for conception. IUDs work by stopping the implantation of a fertilized egg in the uterus. Will the morning-after pill work if I have already ovulated?

The emergency contraceptive pill works best when taken as soon as possible after unprotected sex, up to 4 or 5 days. It’s available over-the-counter at pharmacies without the need for a prescription.

the active ingredient in the prescription contraceptive Ella, one of two types of morning-after pills approved in the United States. (The other, Plan B One-Step, which does not require a ...

Drugmaker Perrigo said the prescribed 30 mg dose of Ella prevents but cannot end pregnancies. The "much more widely used morning-after pill" Plan B "contains a different drug and does not work in ...

Plan B, also called the morning-after pill, is an emergency contraceptive pill taken after unprotected sex to prevent pregnancy. You don't, however, have to wait until the morning after sex to ...