Euryale seed (Euryale ferox), also known as fox nut or makhana, is widely used in traditional Chinese medicine (TCM) and Ayurveda. In TCM, it is known as Qian Shi and is traditionally used to improve kidney and spleen function, treat diarrhea, and manage excessive vaginal discharge (leucorrhea). Its astringent properties are cited as a reason for its use in conditions involving abnormal uterine bleeding, including menorrhagia (heavy menstrual bleeding). Historical TCM texts suggest Euryale seed helps “consolidate essence” and “stop leakage,” which is interpreted as an ability to reduce excessive bleeding. However, these uses are based on traditional theory rather than biomedical evidence.

Scientific studies on Euryale seed focus mainly on its antioxidant, anti-inflammatory, and anti-diabetic properties. There is a lack of clinical or even preclinical research directly investigating its effects on menorrhagia or mechanisms relevant to menstrual bleeding (such as effects on uterine blood flow or coagulation). No randomized controlled trials or pharmacological studies specifically support its efficacy for menorrhagia. Therefore, while the use of Euryale seed for menorrhagia is well documented in traditional medicine, there is minimal scientific evidence to validate this application.