This paper aims to clarify the purpose and the development of the Commercial Union movement by the Japan
Pharmaceutical Association. As a professional organization of pharmacists, JPA promoted the movement to
stabilize pharmacy management around 1960s, when there are two amendments to the Pharmaceutical Affairs
Law. Previous studies focus on these two legal amendments as well as the role the Japan Pharmaceutical
Association played in their legislation. This understanding explains that the amendments, reflecting the demands
of the Japanese Pharmaceutical Association, provided for the proper placement clause and protected the interests
of the pharmacists who own each pharmacy and made up the majority of the Japanese Pharmaceutical Association.
However, there is a major problem, overestimating the effects of the proper placement clause. In fact, from that time
on, it was believed that those effects were limited and were not very useful in stabilizing pharmacy managements.
The Japan Pharmaceutical Association, the government, and individual pharmacists had to make their own efforts
not only to stabilize pharmacies’ managements, but also rationalize and modernize them. They also had to carry
out political campaign outside the context of the pharmaceutical affairs. As a clue to reconstructing the history of
the pharmaceutical system from this broad perspective, this paper first analyzes the commercial union movement
of that period.