Apparatus and methods are described herein for a container with a unit dose of a concentrated substance that can be diluted and orally consumed using the container. In some embodiments, an apparatus includes a container body that defines an opening in fluid communication with an interior of the container body. A cap is coupled to the container body and encloses the opening. A unit dose of a concentrated medicament or a concentrated contrast agent is disposed within the interior of the container body. The unit dose of concentrated medicament or contrast agent can be diluted to a select dilution strength with a volume of a liquid receivable through the opening and within the interior of the container body. In some embodiments, the apparatus can include a barrier member in which the container body and cap can be disposed to protect the medicament or contrast agent from light and/or moisture.
