Abstract: The present invention relates to a formulation for parenteral consisting of a gelling agent or agents, a water miscible solvents and an active agent or agents. The aim of the suspension is to deliver active agent or agents to a subject in the form of a depot that, on administration to the subject, forms a depot. The depot will disperse in time and during this time period, active agent or agents are released into the subject.

Abstract: The present invention relates to a device for administration to the mammary gland cavity of a subject including at least one active agent; and, at least one carrier material; and, characterized in that the environment into which the device is inserted into activates dispersion of the active agent. In further embodiments, a muco-adhesive material is used as a retainer material for the carrier material/active agent mixture. The aim of the device is to deliver active agent or agents to a subject in the form of a suppository that, on administration to the subject, disperses into the subject environment. The device is particularly useful for delivery of an active agent to the mammary gland of a lactating cow.