In Detroit, Michigan, Fantus was an apprentice for Mr. Leushner at Paul Leuchner's Drug store, who began training him in pharmacy.

Source:[1] From about 1910–1915, at the Pharmacological Laboratory of the University of Illinois, Fantus conducted research in order to formulate medications that were more enjoyable to children.

Fantus' goal was to create medications that were not only palatable to children, but relatively easy and inexpensive to make, in order for them to be readily available and accessible to the public.

Strong emphasis was put on the ability of the tablet to dissolve, to be an attractive color, and to have a palatable sweet flavor not reminiscent of typical medicine.

It is the author's hope that this booklet may be instrumental in robbing childhood of one of its terrors, namely, nasty medicine; that it may lessen the difficulties experienced by nurse and mother in giving medicament to the sick child; and help to make the doctor more popular with the little ones.

Sources:[2][3][4]In the book, Fantus includes sweet tablet formulas for the following: In 1918, three years after the publication of Candy Medication, Fantus published an article in the Journal of the American Pharmaceutical Association entitled "Tolu and sugar coating in the disguising of medicines,"[5] in which he amended some of his formulas from the book.

From information he obtained from Russian publications, Fantus learned that storing blood was a rather simple process and that establishing some sort of laboratory for it in the United States would not be very complicated.

World War II spurred Fantus on as he wanted to use the blood from people state side to save the lives of U.S. soldiers overseas.

Just think what it would mean to our soldiers to know that their loved ones at home were sending them the Blood of Life in their moment of greatest need.Fantus secured permission, spread the word of the establishment, obtained a suitable room at Cook County Hospital, and put Dr. Elizabeth Schermer in charge of the laboratory.