This is a statement from Jan 18, updated Mar 19, from FSRH giving information about Kyleena, which is a new levonorgestrel (LNG) containing intrauterine system (IUS).
What is Kyleena?
An IUS. It contains levonorgestrel, like Mirena does.
It is licensed for 5 years of use, but only for contraception. It is not licensed for use in heavy menstrual bleeding, nor for the progesterone component of HRT.