- – EllaOne is 95% effective up to 120 hours (5 days) following unprotected sex
- – Levonelle is effective up to 72 hour (3 days) after unprotected sex, though effectiveness decreases the longer you wait to take it
- – Neither ellaOne or Levonelle are effective in preventing pregnancy if you have already ovulated.
- – If you vomit within 3 hours of taking either EllaOne or Levonelle you should take another tablet immediately.