ABSTRACT
Oral dose delivery of active pharmaceutical ingredients (APIs) is the oldest, simplest, and most common means for delivering a drug into the human body. An oral solid dose (OSD) product is defined as any solid pharmaceutical product ingested by mouth to be absorbed in the gastrointestinal (GI) tract. With the advent of modern clinical methods and achievements in scientific research and development (R&D), the delivery method of OSD products has become as critical as the API itself. How to deliver the APIs to specific target zones without losing their efficacy is at the heart of the OSD industry.
