According to Devner, the American Druggists Syndicate was in business from 1912 through 1916. They were in business at least as late as 1927, because they started selling a new fragrance that year called Delectol.
George B. Griffenhagen wrote a nice called "Pharmacy Organizations 1902-1952." In the article he said that in 1905, there was almost 700 wholesale druggists in the country. In an attempt to save money on group purchases from wholesalers, they formed the American Druggists Syndicate that year. The products listed here may be directly related to that organization or they may be the products of another firm attempting to capitalize on the name.