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.
Because it is a herb specifically indicated to treat uterine cysts as can be seen on Flying Squirrel Faeces's page.
Flying Squirrel Faeces is a Warm herb that tastes Bitter and Sweet. It targets the Spleen and the Liver.
Its main actions are: Disperses congealed Blood in the lower abdomen and uterus and relieves pain. Promotes childhood nutrition with Cold Stagnation and focal abdominal swelling.
Uterine fibroids Ovarian cysts Swollen adbomen due to malnutrition Tumors Amenorrhea Snake bites Insect bites