NorLevo, the morning after pill containing levonorgestrel, can cause side effects that are generally mild and temporary but vary among individuals[1]. The most commonly reported side effects include:
- Abdominal pain or cramps[1]
- Breast tenderness[1]
- Diarrhea[1]
- Dizziness[1]
- Fatigue or tiredness[1][7]
- Headache[1][7]
- Irregular, altered, or heavier menstrual bleeding (period may come earlier or later than expected)[1][7][3]
- Migraine[1]
- Nausea or vomiting[1][7]
Other possible but less common side effects can include bloating, premenstrual-like symptoms, urticaria (rash), itchiness, and, rarely, severe allergic reactions such as swelling of the face, lips, or throat[3][7].
If vomiting occurs within two hours of taking NorLevo, you should contact a healthcare provider, as another dose may be needed[1]. Most people will have their next period within seven days of the expected date. If your period is delayed by more than seven days, it is advised to take a pregnancy test[1].
Serious side effects are rare but can include severe allergic reactions. Seek immediate medical attention if you experience difficulty breathing, facial swelling, or hives[7].