The practice of pharmacy in Guam is declared a professional practice affecting the public health, safety, and welfare and is subject to regulation and control in the public interest. It is further declared to be a matter of public interest and concern that the practice of pharmacy, as defined in this Act, merit and receive the confidence of the public and that only qualified persons be permitted to engage in the practice of pharmacy, and to ensure the quality of drugs and related devices distributed on Guam. This Act shall be liberally construed to carry out these objectives and purposes.