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morning after pill

Dosage: - levonorgestrel 1.5 mg (One Step now advertised on WebMD) & ulipristal are used - Ovral was used in 1998, but require 4 pills & 2 visits or at least doses 12 hours apart. Drug interactions: - drugs that interfere with metabolism of levonorgestrel or ulipristal

General

levonorgestrel (Norplant) ulipristal acetate (Ella)

References

  1. WebMD Plan B One-Step http://www.webmd.com/sex/birth-control/plan-b#1
  2. Locke T for Medscape. Sept 21, 2016 Emergency Contraceptives Affected by Other Medications, UK Warns. http://www.medscape.com/viewarticle/869116