What are the possible side effects of levonorgestrel emergency contraceptive (Plan B)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have severe pain in your lower stomach or side. This could be a sign of a tubal pregnancy (a pregnancy that implants in the fallopian tube instead of the uterus). A tubal pregnancy is a medical emergency. Less serious side effects may include: • nausea, diarrhea, or stomach pain; • dizziness, tired feeling; • breast pain or tenderness; • changes in your menstrual periods; or • headache. 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. What is the most important information I should know about levonorgestrel emergency contraceptive (Plan B)?
