Helmet weed is an important medicinal plant in Traditional Chinese Medicine - written mentions of "Huang Qin" date back to the Late Han Dynasty, circa 25 to 220 AD.

Taste. Helmet herb is bitter in taste.

Effect. Helmet weed is a commonly used psychoactive plant, which is applied as a natural sleep and sedative. The effect is generally sedative, calming and anti-anxiety. The sedative effect is rather mild and subtle, which is why this medicinal plant is suitable for everyday use. A minor analgesic and an anti-inflammatory effect have also been demonstrated with some of the ingredients. Helmet herb is also said to help against headaches and menstrual cramps.