Characteristics of "Hard-to-Use" Press-Through-Package Sheets: An Analysis of Information Collected by Marketing Specialists of a Japanese Medical Wholesaler.

Pockets in PTP sheets should be designed so as to minimize the gap between the drug and the pocket, and PP or PVC should be used as the front material instead of aluminum, PCTFE or PE. Our results suggest that marketing specialists can play effective roles in postmarketing surveillance.