Introduction. Moral, ethical, and professional deontological rules have a substantial impact on the social relations of legal regulation regarding liability for abuses and violations of citizens’ rights – people taking medication – patients as part of the health care system. The identification of the place and role of moral norms, ethics, and professional deontology, their quality as specific non-traditional primary sources in the development of the health care system, and the sub-branch of pharmaceutical law in the Republic of Moldova were the focus of the present study. Material and methods. The secondary descriptive synthesis study of normative-legal acts as primary specific non-traditional sources, viewed through the lens of the protection of the rights of the consumer of medicines, the patient – the ultimate beneficiary of the social relations in the field of health care – spanned the years 1991 to 2021. The most relevant sources subject to analysis are the Constitution of the Republic of Moldova, the Code of Ethics for doctors and pharmacists in the Republic of Moldova, laws, and sub-legislative acts, etc. The study is based on the use of several recognized techniques and methods of analysis: systemic approach, synthesis, logical-legal deduction, content and comparative analysis, etc. Results. Both the literature and recognized authors state that respect for moral, ethical, bioethical, and professional deontological norms in the field of health care has always been highly appreciated in society, which has led to the recognition of the nobility of medical and pharmaceutical activity. The results presented in this paper have made it possible to highlight aspects that recommend that the investigation of the role of legal regulation in medical and pharmaceutical activities also question the place and role of moral, ethical, and bioethical norms, as they generally have the same thematic orientation and influence on law, legislation, the practice of applying the law, and vice versa. Conclusions. The accomplished study allowed the identification of the dialectical and organic unity between moral, ethical, bioethical, and deontological sources with the rules of law - the moral-legal foundation of medico-pharmaceutical law. The consolidation of legal and moral norms demonstrates the structuring of the sub-branch of medico-pharmaceutical law. The analysis of the normative-legal acts in the Republic of Moldova confirms both the functionality of the „moral-ethics-deontology-law” system and the importance given to the protection of the rights of the consumer of medicines, the patient, as the ultimate beneficiary of social relations in the field of health care.