This study explored health-seeking practices and utilization of ethnomedical therapies for chronic pain management among people who use drugs (PWUD) in Nigeria. Data were generated through in-depth interviews with PWUD who lived with chronic pain (n = 26). Participants were recruited through snowball sampling in Uyo, Nigeria. Interviews were recorded, transcribed verbatim, coded and analysed thematically. Participants reported challenges with biomedical pain management, including a lack of cure for pain and low adherence to medications due to financial constraints and restrictions on dispensing of pharmaceutical opioids. These challenges contributed to inadequate biomedical management of chronic pain and encouraged utilization of herbal remedies, including those originating from other ethno-linguistic settings. While some preferred herbal remedies to biomedical care, others used these remedies due to inability to access biomedical pain management. Further, while some found herbal remedies to be helpful in relieving pain, others experienced adverse reactions and sought emergency medical services for this reason. As a result, they disavowed ethnomedical therapies and reaffirmed trust in biomedicine. Participants choose between biomedicine and ethnomedical therapies in managing chronic pain, and these choices were often shaped by structural inequality and the wider context of medical pluralism. Findings indicate a need to promote diversity and choice in healthcare and ensure access to safe, equitable and culturally-appropriate care through health insurance coverage and formal regulation of ethnomedical providers.