​The Medical Formulary, authored by Benjamin Ellis, is a comprehensive compilation of medical prescriptions drawn from the practices and writings of esteemed physicians across America and Europe. First published in the 19th century, this work serves as a valuable resource for medical practitioners, offering a diverse array of formulas for various ailments. The book’s primary focus is on presenting these prescriptions without delving into detailed therapeutic explanations, thereby allowing healthcare professionals to apply them as needed in their practice.​

In addition to the core collection of prescriptions, the formulary includes an appendix that provides information on common dietetic preparations and antidotes for poisons. This supplementary content enhances the utility of the book, making it a practical guide for addressing a broader spectrum of medical situations. The inclusion of antidotes is particularly noteworthy, reflecting the medical community’s awareness and preparedness for poisoning cases during that era.​

The book’s structure is designed for ease of use, with prescriptions organized systematically to facilitate quick reference. While it does not delve deeply into the rationale behind each prescription, it offers a snapshot of the medical practices and remedies prevalent in the 19th century. This approach underscores the importance of practical knowledge and the application of established treatments in medical practice.​

The Medical Formulary stands as a testament to the medical knowledge and practices of its time. Its enduring presence in medical literature highlights the value placed on preserving and sharing medical knowledge across generations. For contemporary readers and medical historians, it offers a window into the evolution of medical treatments and the continuity of certain practices in the face of changing medical paradigms.