Patent ID: 8419708

Claim:
A transdermal drug administration method, comprising: putting, onto the skin, an apparatus comprising a microneedle device having a plurality of microneedles capable of piercing the skin and a microneedle substrate supporting the microneedles; a coating disposed on the microneedles and/or the microneedle substrate, the coating containing a dry drug; a pad portion disposed on the microneedle device; and a dissolving solution reservoir disposed on the pad portion through a diaphragm, the dissolving solution reservoir containing a dissolving solution for drug dissolution and having a protruding portion formed therein, a tip of the protruding portion being linear or planar, the amount of the drug contained in the coating being 3-6 mg per 20 μL of the dissolving solution supplied to the microneedle substrate; and by pressing the protruding portion of the dissolving solution reservoir to break the diaphragm, opening the dissolving solution reservoir to supply the dissolving solution to the pad portion and the microneedle device, and further piercing the skin with the microneedles, thereby allowing transdermal administration via the microneedles of the drug dissolved in the dissolving solution.