The present invention relates to a helically-shaped medicated veterinary system suitable for delivery of a drug to the vaginal cavity of a female non-human mammal and to a method of manufacture. The drug delivery system is helically-shaped and comprises a three layered polymer fibre. The polymer fibre comprises a polymer core, a polymer intermediate layer comprising a drug, and a polymer skin. The medicated system provides a controlled delivery of drug to the vaginal cavity of the mammal. The present invention also relates to a process of making the springs.
