Otis Clapp
Otis Clapp made and marketed his own medicines, organizing New England's first homeopathic pharmacy in 1840. "About this time [1842] Dr. Luther Clark visited Philadelphia, and becoming acquainted with Dr. Hering and a few other physicians, arranged with them to send Mr. Clapp some books and medicines. Soon after Mr. Clapp purchased a fifty dollar case of tinctures and triturations, and from this "infinitesimal" beginning arose his present pharmacy. He began to make his own dilutions, to medicate and put up cases, and his room became, and has continued to be, a kind of Exchange for the whole profession in New England…. In connection with his pharmacy Mr. Clapp has published a large number of books, and has acted as agent for other publishing houses. His establishment is at No.3 Beacon Street." The name of the firm was changed to Otis Clapp & Son in 1874, with the addition of J. Wilkinson Clapp.
Other homeopathic pharmacies in Boston were opened by Nathaniel C. Peabody, in 1845, first in Suffolk Place, then at No. 56 Beach Street; L. W. Loring and Dr. S. Whitney, in the 1860s, and A. A. Reeve, in 1876.