Plan B -

: Such as hives, difficulty breathing, or swelling of the face/throat. 3. Follow-Up for Effectiveness Plan B One-Step (1.5 mg levonorgestrel) Information - FDA

, you can report it through the following official channels: Plan B

: Seek help for unusually heavy vaginal bleeding that is not your period. : Such as hives, difficulty breathing, or swelling

: Call 1-800-330-1271 (Mon–Fri, 9 AM – 5 PM ET) to report side effects directly to the manufacturer. : Such as hives