I agree it depends on what your issues are.
Loss of estrogen affects the urethra and the bladder as they thin and becomes irritated and this causes going to the loo a lot as well as leakage.
Many women have to use full HRT + vaginal estrogen, so unless you have been down that route, it's really worth considering.
Oxyb is really a muscle relaxant that calms the bladder down a bit but it does have some side effects (I have a friend using it but there is also a newer drug out that replaced it, some years ago.) And if weeing too much is caused by a thin bladder lining, only vaginal estrogen /HRT will help.