This case concerned a constitutional challenge to a licensing scheme for medical practitioners who wish to dispense medicines. Prior to 2004, medical practitioners could dispense medicines by simply informing the Health Professions Council. The new scheme, introduced through amendments to the Medicines Act (sections 22C-22H) and Health Professions Act (section 52), required medical practitioners to obtain a licence from the Director-General of Health to dispense medicines. The licence could only be issued on prescribed conditions, required supplementary training in good dispensing practice, and was linked to specific premises. Regulation 18 of the Medicines and Related Substances Act Regulations detailed application requirements and factors the Director-General must consider, including the existence of other licensed health facilities in the vicinity, geographic area, estimated health care users, and demographic considerations. The applicants (the Affordable Medicines Trust, the National Convention on Dispensing, and Dr Mabasa) challenged: (1) the phrase "on the prescribed conditions" in subsection 22C(1)(a) as vague and overbroad; (2) the linking of licences to specific premises as ultra vires and unconstitutional; (3) various provisions of regulation 18 as vague and creating a framework for refusing licences where pharmacies existed in the vicinity; and (4) regulation 20 on licence renewal periods. The High Court dismissed the challenge. The respondents stated the scheme was designed to address bad dispensing practices, including allowing lay staff to dispense, dispensing expired medicines, improper storage, and conflicts of interest created by pharmaceutical company incentives.