By utilizing the dimensional analysis format, this comprehensive drug calculation text and workbook develops students mathematical skills for use in medical dosage calculations, beginning with simple arithmetic and progressing to the most complex drug calculation problem. It stresses the critical importance of safe administration of medication doses for patients in both the inpatient and outpatient setting. It provides case studies, diagnostic reviews, an extensive array of problems to ensure students' understanding and instill a sense of confidence as they learn to master these most critical medical skills.