Picrorhiza is also known by several other names like black hellebore, black kutki, kali, kali kutki, kali-kutki, karru, katki, katukurogani, kaur, kuru, kuruwa, kutaki, kutki, picroliv, Picrorhiza kurroa, Picrorhiza kurroa extract, Picrorhiza kurroa Royle, Picrorhiza kurroa Royle ex Benth., Picrorhiza lindleyana Steud., Picrorrhiza kurroa, Plantaginaceae (family), Scrophulariaceae (family). The katuka plant is native of the Himalayas and is part of Ayurvedic medicine as a treatment for gastrointestinal problems, such as indigestion and constipation. Usually the root or rhizome of the plant is used medicinally. Dosage for picrorhiza is between 400 and 1,500 mg of powdered, encapsulated picrorhiza per day has been recommended. One author considers this equivalent to the use of 1–2 ml of fluid extract twice per day.18 Picrorhiza tastes quite bitter. Combining with ginger root powder capsules or taking as tea can improve palatability.