Evra is a transdermal contraceptive patch containing norelgestromin and ethinylestradiol hormones. Each patch delivers 203 micrograms of norelgestromin and 34 micrograms of ethinylestradiol over 24 hours. The package contains 3 patches for transdermal administration. This is a prescription medication manufactured by Janssen Pharmaceuticals. The patches are designed to be worn on the skin and provide continuous hormone delivery for contraceptive purposes. Each patch lasts for 24 hours. As this is a prescription medication, it should only be used under proper medical supervision and according to prescribed instructions.