Plan B® is the only FDA-approved EC composed of progestin-only (levonorgestrel) tablets. And since levonorgestrel is a well-trusted and commonly used progestin, you can feel confident dispensing it to patients. Additionally, Plan B® has a superior tolerability profile compared to the Yuzpe regimen (levonorgestrel and ethinyl estradiol). In a clinical trial, women taking Plan B® experienced 27% less nausea and 13% less vomiting than those on the Yuzpe regimen.
The most common side effects associated with the use of Plan B® include nausea, abdominal pain, fatigue, headache, menstrual changes, dizziness, breast tenderness, diarrhea and vomiting. Although women should return to normal menstruation after taking Plan B®, they should be informed that their next period may be heavier or lighter, earlier or later. Additionally, patients should be advised that they may be pregnant if their period is more than 1 week late.
In the event that a patient vomits within 1 hour of taking a Plan B® tablet, only her healthcare professional can decide if a replacement dose is needed. So it is important to advise patients to call their healthcare professionals immediately if such an event occurs.
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