Not all birth control pills work instantly. It depends on your cycle, the type of pill, and how you take it. If you just started birth control pills and you're wondering whether you're protected from ...

Different types of birth control start working to prevent pregnancy at different times. Birth control pills can take up to a week to start working, while barrier methods like condoms start working ...

How does birth control work? There are basically two types of birth control pills, synthetic forms of the hormones progesterone and estrogen, which can be close to 100 percent effective at preventing ...

How Does Mirena Work for Birth Control? Mirena is a small, flexible plastic, T-shaped system that slowly releases small amounts of a progestin hormone (levonorgestrel) into your uterus. It is the same ...

The morning-after pill helps prevent pregnancy after unprotected sex, but its efficacy differs depending on the user's body mass and the timing of when they take the medication. When you purchase ...

If you missed your pill and had unprotected sex, you may need an emergency contraceptive Medically reviewed by Renita White, MD It is possible to get pregnant if you missed a pill and had unprotected ...

The most commonly used and prescribed birth control pill in the U.S. was classified by the International Agency for Research on Cancer (IARC) at the World Health Organization (WHO) as carcinogenic. In ...

Get a behind-the-scenes look at how Regents Professor Gunda Georg led the drug development and its status today.

The most common formulation of birth control pills has been linked to a doubling of relative risk of heart attack and stroke, a new study finds. Contraceptive vaginal rings and skin patches formulated ...