ObjectivesWe conducted a study to evaluate the use of job aids and simple user instructions to improve adherence for the treatment of childhood pneumonia with amoxicillin dispersible tablet (DT).DesignA mixed-method study implemented in three phases between October 2015 and February 2016.SettingsThe study was implemented in two subdistricts of Bangladesh.ParticipantsCaregivers of children aged 2–59 months, health service providers and key stakeholders at national and district level.InterventionsAn intervention including training and job aids and user-friendly instructions was introduced in one subdistrict while standard amoxicillin DT packaging and instructions with no training served as the control in the comparison subdistrict.Primary outcomeAdherence behaviour of caregivers of children aged 2–59 months for the treatment of childhood pneumonia with amoxicillin DT.MethodsWe conducted a survey with 56 caregivers in the intervention subdistrict and 38 caregivers in the comparison subdistrict. We also conducted 44 in-depth interviews to evaluate the job aids and user-friendly instructions with healthcare providers and caregivers to assess the feasibility, usability and acceptability of the tools in intervention subdistrict.ResultsFor 5-day treatment course, 32.1% (95% CI 23.1% to 41.1%) of caregivers in the intervention subdistrict and 2.6% (95% CI 0.3% to 7.8%) in the comparison subdistrict maintained full adherence to the amoxicillin DT treatment for pneumonia. More children under 12 months were given age-appropriate treatment than older children. Key stakeholders and healthcare providers considered the use and integration of the tools into the health system to be feasible and acceptable.ConclusionsThe provision of tools for the treatment of childhood pneumonia with amoxicillin DT had a positive influence on adherence behaviours. These tools can help close information gaps and overcome the barriers posed by medical illiteracy and remembering instructions from providers.