Consumption of Nourishing Blood and Clearing the Brain Granules is generally not recommended during menstruation. Nourishing Blood and Clearing the Brain Granules is a kind of Chinese patent medicine, which is composed of Angelica sinensis, Rhizoma Ligustici Chuanxiong, and Sinica, etc. It has the efficacy of nourishing blood and calming the liver (calming the wind of the liver by replenishing the liver’s blood), and invigorating blood and opening up the channels and collaterals, and it has a better therapeutic effect on the symptoms of vertigo, easy to be irritated, and dreamyness, which are caused by the deficiency of the liver. Nourishing blood and clearing the brain particles after taking the drug may appear rash, itching, vomiting, diarrhea, dry mouth, headache, tinnitus and other adverse reactions, contraindications for pregnant women, allergic to the product and patients with hepatic dysfunction are prohibited. It should be noted that the drug should be used with caution for people with low blood pressure and liver disease, and smoking, alcohol and greasy food should be avoided during the medication. From the composition and efficacy of Nourishing Blood and Clearing the Brain Granules, the ingredients contain Chuanxiong rhizoma, etc., which has the effect of activating blood circulation and removing blood stasis (promoting the operation of blood and eliminating blood stasis in the body), and may have an effect on the volume and cycle of menstruation and cause abnormal menstrual blood flow, so Nourishing Blood and Clearing the Brain Granules are not recommended to be consumed during menstruation. When treating with medication, it is necessary to be guided by a Chinese medicine practitioner to recognize the evidence and not to use medication arbitrarily to avoid adverse consequences.