Zhengtian pill how long to take headache to be effective can not be generalized, need to be combined with the patient’s condition, the drug on the case, generally speaking, 3 ~ 7 days or so can be effective. Zhengtian Pills of the drug’s instructions, and did not specify the time to see the effect, the specific time to see the effect of the drug may be different, in general, usually take about 3 to 7 days to see the effect. Zhengtian Pill is a proprietary Chinese medicine composed of white peony, dihuang and duhuo, which has the efficacy of dispersing wind and activating blood (dispersing wind and promoting blood circulation), nourishing blood and calming the liver (calming the liver wind by replenishing the liver blood), and clearing the channels and relieving pain (clearing the channels and relieving pain). It has therapeutic effects on migraine, neuropathic headache, premenstrual headache and other conditions caused by external wind, blood stasis and stagnation of collaterals. Adverse reactions of Zhengtian Pill include dry mouth, bitter mouth, diarrhea and other symptoms; contraindications are not clear; precautions against tobacco, alcohol and spicy food; athletes should be cautious; allergy to the product is prohibited; allergies should be used with caution. If there is any discomfort, it is recommended to consult a Chinese medicine practitioner for standardized treatment under the guidance of evidence to avoid delays in the condition.