Cowherb Seed Whole (Vaccaria Segetalis)

Cowherb Seed Whole (Vaccaria segetalis), known in Traditional Chinese Medicine as Wang Bu Liu Xing (王不留行), is a small, hard seed traditionally used to invigorate blood, promote circulation, and facilitate lactation and menstruation. These seeds are neutral in temperature and slightly bitter in taste, often included in formulas where movement and flow of blood or qi are needed—especially in the breasts and lower abdomen.

Wang Bu Liu Xing is commonly used to promote lactation in cases of insufficient milk due to qi or blood stagnation, and to regulate menstruation, particularly in women experiencing delayed periods, menstrual pain, or clotting. It is also used to reduce swelling and relieve pain in the breasts or testicles, often associated with stagnation or blockage.

Because of its strong ability to move blood and disperse stasis, Cowherb Seed is not typically used in pregnancy, but is a go-to herb for postnatal recovery, breast health, and reproductive regulation. It is also used externally as a poultice or in herbal plasters for nodules, swellings, or localized discomfort.

When decocted, Cowherb Seed yields a light infusion and is often combined with herbs like Chuan Xiong, Xiang Fu, or Dang Gui in blood-invigorating or menstrual-support formulas.

Each batch of Cowherb Seed Whole (Vaccaria segetalis) is carefully cleaned and dried to preserve its firmness, herbal strength, and energetic quality. Whether used in reproductive support formulas, lactation tonics, or herbal applications for soft tissue swellings, Wang Bu Liu Xing offers a gentle yet effective means of promoting flow and clearing stagnation.