Background: There is little information about how healthcare professionals feel about providing palliative care for patients with a substance use disorder (SUD). Therefore, this study aims to explore: 1) the problems and needs experienced by healthcare professionals, volunteers and experts-by-experience (HCP/VE) during their work with patients with SUD in a palliative care trajectory and; 2) to make suggestions for improvements using the quality of care model by Donabedian (Structure, Process, Outcome).Methods: A qualitative study was conducted, consisting of six focus group interviews which consisted of HCP/VE working with patients with SUD in a palliative care phase. At the end of the focus group interviews, participants structured and summarized their experiences within a Strengths, Weaknesses, Opportunities and Threats (SWOT) framework. Interview transcripts (other than the SWOT) were analysed by the researchers following procedures from the Grounded Theory Approach ('Grounded Theory Lite'). SWOT-findings were not subjected to in-depth analysis.Results: HCP/VE stated that within the Structure of care, care networks are fragmented and HCP/VE often lack knowledge about patients' multiplicity of problems and the time to unravel these. Communication with this patient group appears limited. The actual care-giving Process requires HCP/VE a lot of creativity and time spent seeking for cooperation with other caregivers and appropriate care settings. The latter is often hindered by stigma. Since no formalized knowledge is available, care-delivery is often exclusively experience-based. Pain-medication is often ineffective due to active substance use. Finally, several Outcomes were brought forward: Firstly, a palliative care phase is often identified only at a late stage. Secondly, education and a (mobile) team of expertise are desired. Thirdly, care for the caregivers themselves is often de-prioritized.