Recently, we have heard about several drug product recalls due to several reasons, in which drug mix-ups is the major one. Good Manufacturing Practice (GMP) is the key regulation for any pharmaceutical industry to being approved for sale its good all over the world. Also, World Health organization (WHO) has set the standards for all the countries, but due to several reasons like misconduct of GMP will lead to only one result and that is recall of the product with recalling reputation of the company, also. This book focusses on such recent drug mix-ups taken place recently and it also throw somewhat light to GMP, also. Aim behind publishing this book is not to criticize anybody involved in the process, but it is published to develop awareness to the society. After reading this book, patient should first ask about the drug product he/she is taking, whether same lot is recalled off or not. Such a small precaution will save several lives because these mix-ups can lead to death of the patient, also.