There is no definite time for how long it takes for Tianma Hook Teng Drink to work. How long it takes to see the effect is related to the patient’s physical condition, the progress of the disease and other factors. The medication should be taken according to the doctor’s prescription, not self-medication. Tianma Hook Teng Drink has the effect of calming the liver and quenching wind (regulating the function of the liver to get rid of the internal wind (caused by the abnormal function of the internal organs)), clearing away heat and activating the blood, and tonifying the liver and kidneys. There are more ingredients in Tianma Hookteng Drink, including Tianma, Hookteng, Shijiazhuang, Gardenia, Scutellaria and so on. It is used in the treatment of hyperactivity of liver yang, liver wind upward disturbance (wind evil caused by the liver interfering upward to the head) syndrome, symptomatic headache, vertigo, insomnia and dreaminess, or bitter mouth and red face, red tongue with yellow fur, stringy or numberless pulse, and so on. In addition, for severe dizziness and headache, antelope horn, dragon bone and oyster can be added to enhance the power of calming the liver and submerging yang (inhibiting the liver from rising too much yang) to calm the wind; if the liver is ablaze with fire, with bitter mouth and face redness, and irritability, add Gentian grass and Xia Kucao to strengthen the power of clearing the liver and diarrhea; for a stringy and fine pulse, it is advisable to add Radix Rehmanniae Praeparata, Fructus Lycii, and Polygonum Multiflorum to nourish the liver and kidneys. If this medicine is needed, it should be taken under the guidance of a doctor.