20 mg CBD transdermal patch. 24 hour time release. Contains 1 patch. Your daily dose of Select CBD has never been easier. Our transdermal patch permeates all seven layers of the skin to slowly and steadily release 20 mg of pure CBD into the bloodstream over 24 hours. Customer Support: selectsupport(at)curacan.com. (This product has not been evaluated or approved by the FDA to diagnose, treat, cure or prevent any disease).