A collapsible container includes: a container bottom; a container cap; a tubular member having a longitudinal axis and a cylindrical wall, the tubular member having an outer surface and an inner surface, the cylindrical wall having a wall thickness defined by the distance between the inner and outer surfaces, the cylindrical wall having first and second longitudinal zones of reduced thickness. The first and second longitudinal zones are substantially 180° apart such that the tubular member is collapsible along the first and second longitudinal zones to reduce the tubular member to a flattened state. The tubular member has a first end adapted to mate with the container bottom, and a second end adapted to selectably mate with the container cap. The container cap and container bottom are integrally formed with the tubular member and the container cap is configured to mate with the second end in a child-resistant manner.