Question:
Transdermal drug delivery systems may be constructed of a number of layers, including:
Author: LEIGHTON DWIGHT OBILLOSAnswer:
1) an occlusive backing membrane to protect the system from environmental entry and from loss of drug from the system or moisture from the skin 2) Drug reservoir or matrix system; store and release the drug at the skin-site; 3) a release liner, which is removed before application and enables drug release; 4) an adhesive layer to maintain contact with the skin after application.
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