Other side effects not listed above are uncommon and may also occur in some people. Tell your pharmacist or doctor as soon as possible if you do not feel well while you are taking EllaOne® or if you notice any side effects and they worry you. You may not experience any side effects at all.
If you experience symptoms of dizziness, drowsiness, blurred vision or loss of concentration, do not drive or use machines.
Because the active ingredient in EllaOne®, ulipristal acetate, works by delaying ovulation your next period may be earlier or later, and heavier or lighter, than normal. This is nothing to worry about, but if your period is more than 7 days late after taking EllaOne® you should take a pregnancy test.