The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
In Chinese Medicine polyuria can be treated by one herbs that we have on record. Here is the list below.
Because it is a herb specifically indicated to treat polyuria as can be seen on Red Poria's page.
Red Poria is a Neutral herb that tastes Sweet. It targets the Kidney.
Its main actions are: Removes Damp-Heat, regulates Water metabolism