E. H. Flagg

Edward H. Flagg (July 14, 1823 - May 3, 1910) was an American patent medicine manufacturer and promoter, most known for his branded "Flagg's Instant Relief" and his later association with John E. Healy and "Texas Charlie" Bigelow of the Kickapoo Indian Medicine Company.

Prof. Flagg's Instantaneous Relief

 * According to some sources, "Flagg's Instant Relief" was the basis for both Hamlin's Wizard Oil and Kickapoo Indian Oil.