Albion Walter Hewlett was an American physician and author, recognized for his contributions to the field of pharmacology and medicine in the early 20th century. He is best known for his work 'Epitome of the Pharmacopeia of the United States and the National Formulary: With Comments,' which served as a comprehensive guide to the standards and practices of pharmaceutical formulations. This work not only provided essential information for practitioners but also reflected the evolving landscape of medicine during a time when pharmacology was becoming increasingly scientific and regulated. Hewlett's writings were significant in bridging the gap between traditional practices and modern pharmaceutical standards, emphasizing the importance of accurate and reliable formulations in medical treatments. His contributions to the pharmacopeia helped set a precedent for future developments in the field, influencing both the education of pharmacists and the practice of medicine. Despite his relatively short life, Hewlett's impact on pharmacology and his commitment to advancing medical standards left a lasting legacy in the healthcare community.