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 if you have:
mood or behavior changes, anxiety, depression, or thoughts about suicide; or
liver problems--nausea, vomiting, stomach pain (upper right side), tiredness, easy bruising, dark urine, jaundice (yellowing of the skin or eyes).
Common side effects may include:
hot flashes, night sweats;
missed menstrual periods;
mood changes;
headache, joint pain;
nausea; or
trouble sleeping.
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.
 Elagolix side effects (more detail)
