The present invention provides a system for transdermal delivery of dried or lyophilized pharmaceutical compositions and methods using thereof. The system comprises an apparatus for facilitating transdermal delivery of a peptide or polypeptide that generates hydrophilic micro-channels, and a patch comprising dried therapeutically peptide or polypeptide. Particularly, the system of the present invention facilitates transdermal delivery of parathyroid hormone useful for preventing or treating bone disorders.