Introduction: Pharmacy is a multidisciplinary science that traditionally was integrated with medicine and one individual has been practicing in both fields. Scientists such as Avicenna, Rhazes, and Al-Ahvazi were engaged in both diagnosis and treatment while preparing and administering drugs according to the patient’s needs. With the recent advances in medicine and pharmacy and the emergence of numerous specialized disciplines in both, the disintegration of pharmacy and medicine was inevitable and this caused the physician and the pharmacist to work independently though in close relationship to each other. Pharmacist, as a member of the health care professional team, has an important impact on both hospital and community pharmacies, and hence it is of prime concern to implement pharmacy professional ethics in order to improve her/his pharmacy services and safeguard the health of the patient. Taking into account the various activities of pharmacists in the field of pharmacy and adapting these activities with the Childress and Beauchamp quadro-principles of medical ethics, it would be possible to establish ethical guidelines for each activity.This work tries to find out the various types of activities of pharmacists and prepare guidelines based on the four ethical principles mentioned above. In different countries, including America, England and Canada, these codes of ethics have been compiled by related non-governmental organizations, which are pharmaceutical associations, and have been communicated to pharmacists as a charter of professional ethics. As a pharmasict being an expert in drug procurement, counterfeit drugs, dispensing prescriptions, outdated drugs, combined or Galenic drugs, how to interact with health team colleagues and how to interact with the patient are crucial and it is considered as a matter of professional ethics.