Patent ID: 6905016

Claim:
A product packaging system for preventing degradation of a drug in a carrier composition of a transdermal delivery system, consisting essentially of: (a) a product package substantially moisture impermeable comprising a thermoplastic material configured in the shape of a container having one opening, and further having a substantially moisture impermeable cover sheet comprising a thermoplastic material coextensive to said container opening and affixed to the opening edges by means of heat or adhesive; (b) one or more child-resistant pouches which are permeable to moisture consisting essentially of: (i) a primary layer of a nitrile rubber modified acrylonitrile-methyl acrylate copolymer, and (ii) a secondary layer of polyester affixed to said primary layer by means of heat or an adhesive; (iii) one or more transdermal systems comprising a therapeutically effective amount of methylphenidate in a non-aqueous carrier composition, the one or more transdermal systems being sealed within the one or more child-resistant pouches; (c) a desiccant capable of absorbing at least 1.5 grams of moisture over a one year period of storage, wherein the one or more child-resistant pouches and desiccant are sealed within the product package.