If you really want to master pharmaceutical calculations, you will need excellent pharmaceutical calculations books, and not just the notes that your professor gives you. Pharmaceutical calculations are an important component in becoming and practicing as a pharmacist. However, many student pharmacists struggle with becoming proficient in pharmaceutical calculations. This lack of proficiency poses a serious challenge to several students when taking the North American Pharmacist Licensure Examination (NAPLEX^{®}) board exams and contributes to failure. Here are three of the best pharmaceutical calculations books to study if you want to distinguish yourself and become a pharmaceutical calculations expert. At least one of these books belongs in every student pharmacist’s library.

### 1. Pharmaceutical Calculations By Howard C. Ansel PhD and Shelly Janet Prince Stockton PhD RPh

Pharmaceutical calculations by Ansel is in its 15^{th} edition and has gained a reputation as the gold standard textbook for pharmaceutical calculations. It covers all the basic principles and fundamental techniques required in using pharmaceutical calculations in retail, hospital and industrial practice. In particular topics covered include: percentage strengths, ratio strengths and other expressions of concentration, electrolyte solutions and altering product strength among others. Pharmaceutical calculations by Ansel comes with clear explanation of concepts and appropriate illustrative examples. It has practice problems at the end of each chapter and comprehensive review problems at the end of the book which facilitate reinforcement of concepts. Answers are provided for both practice and review problems. The book has a “calculations capsule” which summarizes pertinent equations and concepts covered in each chapter. These features of the book are excellent for quick review invaluable during exam preparations. It also has a case in point feature which presents practical scenarios demonstrating application of concepts covered in the chapter. Step-by-step solutions are provided for the case in point scenarios. The book also comes with student access to searchable full text online and a calculations quiz bank with detailed solutions available through Lippincott, Williams and Wilkins the Point.

### 2. Pharmaceutical Calculations By Maria Glaucia Teixeira and Joel L. Zatz

Pharmaceutical calculations by Teixeira and Zatz is one of the most widely used pharmaceutical calculations textbook in many colleges of pharmacy in the United States. It is a massive tome which covers all the pertinent topics in pharmaceutical calculations. Topics covered include: dosage calculations, drug concentration expressions, dilution and concentration and much more. The book is nicely structured and really easy to read. It is suitable for a self-paced and active learning approach that allows students to reinforce and build on concepts previously studied. Three great features of the book are several NAPLEX-patterned practice problems, step-by-step solutions for all examples and practice problems and dedicated chapter on practical calculations used in contemporary compounding.

### 3. Pharmaceutical Calculations By Payal Agarwal

Pharmaceutical calculations by Agarwal is relatively new. Compared to the pharmaceutical calculations books by Ansel and Teixeira it is a little cheaper too. However, it still covers essentially the exact same topics. The textbook is well-structured with each section comprising easy to understand explanations, solved examples and practice questions. It also focuses on the fundamental math and essential calculations techniques needed for compounding, retail and clinical pharmacy. The book has a ton of features ideal for student learning and exam review. Specifically, these include: practice questions, solved problems and case scenarios. Purchasing the book comes with access to Navigate 2 Advantage which unlocks the ebook, study center, homework and assessment center. This text is cheaper and is ideal for students aiming to develop a great facility in performing pharmaceutical calculations.