Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once or seek emergency medical attention if you have severe pain in your lower stomach (especially on only one side) 3 to 5 weeks after using ulipristal.
Common side effects may include:
headache;
dizziness, tired feeling;
nausea, stomach pain; or
menstrual pain.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Ulipristal side effects (more detail)
