How old are you? it can depend on your age if you can take something different, if you are post meno, you could try Tibilone,it helps with libido and is often given it for that reason
You should have stopped having periods before you cab be prescibed it, but otherwise just tell your Dr about your libido having gone,or reduced,there might be other HRTs that are good for libido
Tibilone contains something similiar to testosterone