So, the International Council for Harmonisation ICH has really helped bring pharmaceutical regulations onto a more common ground across regions like Japan, Europe, and the US. Earlier, things were quite different everywhere and that made development slower, sometimes confusing too.This review tries to give a clear overview of ICH guidelines, mainly focusing on the Quality (Q) series, but also touching on Safety, Efficacy, and Multidisciplinary parts. Not going too deep into heavy details just enough to actually understand what’s important. It looks at how these guidelines evolved, how they’re structured, and why they matter in modern pharmaceutical development. One of the biggest advantages of harmonisation is that it reduces duplication of studies and avoids unnecessary delays while still keeping safety and quality intact. Topics like stability testing, analytical validation, impurity control, QbD, risk management all of these are discussed in a simpler, more concept-based way. Even newer approaches like continuous manufacturing and modern analytical development are included because things are changing pretty fast now. Overall, the aim is simple to make ICH guidelines easier to understand and more accessible, especially for students and researchers while still showing why they’re so important for global standards.
Devram B. Sodha*1, Mayuri Rathod2, Priyank K. Shiyal3, Ankit V. Joliya4, Raj J. Ravani5 (Sun,) studied this question.