Palliative sedation integrates the broad spectrum of practices and approaches in palliative care. Its main objective is not to anticipate the end of life, but to provide comfort and symptom relief for terminal conditions; however, opinions in academic, professional, social, and religious contexts differ about its application. This integrative literature review gathers relevant discussions and research in the Brazilian context to contribute to a more updated and appropriate understanding of palliative sedation. Discussions on palliative sedation bring issues regarding its emergence, the opinions of physicians and students, bioethical factors, and challenges. However, the available literature on this topic is scarce, encompassing social, ethical, religious, and professional aspects that require individual interpretations and consensus among social spheres.