The book entitled "The Assay of Desloratadine and Carvedilol by Visible Spectrophotometry" has been designed for under graduate and post graduate students. The book comprehensive and cover two drugs Desloratadine(Anti-Histamine drug and Carvedilol(a beta blocker used for treating mild to severe congestive heart failure) estimated and validated by using Visible Spectrometry as per guidelines. Statistical analysis of two drugs show that the developed methods has good precision and accuracy. These methods also identifies the percentage of genotoxic impurities present in its formulations.