Evra is a prescription transdermal patch system containing norelgestromin and ethinylestradiol hormones. Each patch releases 203 micrograms of norelgestromin and 34 micrograms of ethinylestradiol over 24 hours. The package contains 3 patches manufactured by Janssen Pharmaceuticals. This is a prescription-only medication that must be used under proper medical supervision. The patches are designed for transdermal administration, meaning the medication is absorbed through the skin over a 24-hour period. Each patch should be applied according to the prescribing physician's instructions and product guidelines. The package includes 3 individual patches for consecutive use as prescribed.