ellaOne can be taken by the majority of women. However, like all medicines, ellaOne can cause side effects. Common side effects include: menstrual disorders, nausea, abdominal pain, upper abdominal pain, abdominal discomfort, vomiting, headache, dizziness, painful menses, pelvic pain, breast tenderness, tiredness, mood swings, muscle pain, back pain
Most side-effects of ellaOne subside within a couple of days. If you have any side-effects that persist or that you are concerned about, you should speak with your doctor, nurse, or pharmacist.