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    • 2. 发明申请
    • Composition and Method for Transdermal Delivery of Cannabidiol (CBD) and Tetrahydrocannabinol (THC)
    • US20230138946A1
    • 2023-05-04
    • US17878998
    • 2022-08-02
    • Ovation Science Inc.
    • James A. Roszell
    • A61K9/00A61K31/352A61K31/05A61K47/32A61K47/06
    • A transdermal delivery composition for the delivery to skin and the penetration of the skin includes: (a) a therapeutic effective amount of a cannabinoid mixture, wherein the cannabinoid mixture comprises cannabidiol (CBD) and Δ9-tetrahydrocannabinol (THC) at a weight ratio of about 1:20 to about 20:1; (b) a hydrophilic polymer/hydrophobic polymer adduct in an amount sufficient to hold the cannabinoid composition and provide a sustain release of the cannabinoid mixture after application to skin tissue over a time period of at least 6 hours; (c) a penetrant component in an amount sufficient to assist with a transdermal penetration of the cannabinoid mixture through skin tissue once the composition has been applied to skin tissue; (d) a surfactant component in an amount sufficient to stabilize the polymer adduct and release the cannabinoid mixture from the transdermal delivery composition upon application to skin tissue; and (e) at least about 70 wt. % water. A method of application of a transdermal delivery composition to skin tissue includes applying the transdermal delivery composition to skin tissue and spreading the composition to form a film on the skin tissue. A method for formulating a transdermal delivery composition based on a desired penetration weight ratio of CBD to THC through skin tissue includes selecting a formulation weight ratio of CBD to THC for formulating the composition, wherein the weight ratio is determined by multiplying the desired penetration weight ratio of CBD to THC by a CBD/THC delivery factor, wherein the CBD/THC delivery factor.