How Does the Birth Control Patch Work?

Like other methods of birth control, the birth control patch releases hormones. Hormones are chemicals made in our bodies. They control how different parts of our bodies work.
The hormones in the patch are the same hormones as in the birth control pill  estrogen and progestin.
The hormones in the birth control patch work by

• Keeping eggs from leaving the ovaries. Pregnancy cannot happen if there is no egg to join with the sperm.

• Making cervical mucus thicker. This keeps sperm from getting to the eggs.