Quality by Design: Concept to Applications.

Area of Science:

• Pharmaceutical Sciences
• Chemical Engineering

Background:

• Quality by Design (QbD) is a systematic, science-driven methodology for pharmaceutical development.
• It emphasizes understanding product and process to ensure consistent quality characteristics.
• Key elements include defining Target Product Profile (TPP) and Critical Quality Attributes (CQA).

Purpose of the Study:

• To review the fundamental concepts of Quality by Design (QbD).
• To outline the essential elements, steps, and tools for implementing QbD in pharmaceutics.
• To summarize applications of QbD in pharmaceutical manufacturing processes.

Main Methods:

• The review highlights QbD's design space, considering Critical Material Attributes (CMAs) and Critical Process Parameters (CPPs).
• It emphasizes risk assessment and Design of Experiments (DOE) as core components.
• Focus is on parameters affecting Critical Quality Attributes (CQAs).

Main Results:

• The paper presents foundational knowledge of QbD, its key elements, and implementation steps.
• Various QbD tools applicable to the pharmaceutical field are briefly outlined.
• Numerous applications of QbD across pharmaceutical unit operations are discussed.

Conclusions:

• This article provides comprehensive data and a roadmap for the global implementation of QbD.
• It supports the universal application of QbD principles for pharmaceutical products.
• QbD ensures consistent manufacturing of high-quality pharmaceutical goods.