Table 1.

Qualitative interview guide.

Domains	Enquiries	Probes
Sexualized substance use	What do you know about SSU?	Types of substances, recent substances of abuse such as designer drugs, methods of consumption and procurement, diseases, and infections
Prophylaxis	What do you know about prophylaxis for HIV/STI?	Pre-exposure prophylaxis (PrEP) and post-exposure prophylaxis (PEP)
Drug overdose related complications and first-aid procedures	How do you manage in case of drug overdose?	Symptoms of drug overdose, harm reduction, possible ways of getting services
Relapse to addiction	What do you know about relapse after deaddiction?	Rates of relapse, possible triggers
Work challenges	Would you like to share the problems you have faced while working with substance users?	Stigma, discrimination, legal challenges
Work experience	Would you like to share your various experiences working with substance users?	Age group, relationship with family members, role of religion and spirituality, effect on quality of life