Alisma orientale, a traditional Chinese herbal medicine, is a diuretic and dampness-expelling herb. Its main meridian tropisms are the liver, kidney, and bladder meridians. Its primary functions and effects are promoting diuresis to alleviate edema, expelling dampness, and clearing heat.

Firstly, it can treat edema, oliguria, and diarrhea. Since Alisma orientale has a relatively strong diuretic effect, it is good at treating edema and oliguria caused by the retention of water-dampness. Moreover, it can expel water-dampness and resolve phlegm-fluid retention, treating dizziness and vertigo caused by the retention of phlegm-fluid in the body and the failure of clear yang to ascend.

Alisma orientale can also treat stranguria and spermatorrhea. As it is cold in nature, it can clear the heat in the bladder and purge the deficient fire in the kidney meridian, making it suitable for cases of damp-heat in the lower jiao. Additionally, it can treat various types of stranguria caused by damp-heat. It also has a good effect on spermatorrhea caused by insufficient kidney yin and excessive deficient fire.