POREX® Drug Reservoirs are loaded with a powdered pharmaceutical agent (e.g., nicotine) and incorporated into a drug delivery device (e.g., a smoking cessation device). Porex can develop the reservoir either from porous plastic or porous fiber materials, depending on the design and mechanical requirements of the reservoir. Both types of materials are engineered for dosage accuracy and structural integrity. They are optimized for loading and absorption of the drug into the porous material and for statistical consistency of drug dose release, as well as for air flow and chemical resistance. Customized part geometries can accommodate varied device requirements.