Worldwide migration leads to people bringing beliefs and practices from one country into another, including those related to self-medication. This study explores the self-medication practices of Pakistani mothers for their children and their reasons for self-medication. We interviewed 23 immigrants. Each interview lasted 60–80 min and was conducted in Urdu. Participants had been living in New Zealand on average 3.25 years. They talked about their prior knowledge and experiences regarding self-medication behaviour for their children. The majority of the mothers treat their children at home before visiting a general practitioner (GP) due to previous unsatisfactory experiences. There was a significant relationship between participants who had family members in healthcare professions, their experiences of healthcare services and self-medication. Bringing medicines from Pakistan is a key source for self-medication practices. Self-medication awareness programs could help mothers to practice safe and responsible use of medicines for the benefit of their children.