Abstract: A container for intravenous fluid has a triangular cross-section to permit improved utilization of space during packaging of several containers in boxes or cartons, and a first opening sealed by a membrane seal which can be pierced with the spike of a conventional intravenous set. A second opening of the container is surrounded with a neck portion forming a joint to which an intermediate member is pivotably mounted. The intermediate member includes a hollow cylindrical portion having two circumferential ribs which are adapted to hold the neck of a standard small vial containing solid antibiotics and the like. The intermediate member also includes an internally mounted hollow spike so that the seal of the antibiotic vial is penetrated by the spike when the vial is mounted to the intermediate member. The duct of the spike of the intermediate member is not aligned with the second opening of the container until the intermediate member is rotated or pivoted into an extreme position.