Taking Gui Fu Di Huang Wan does not usually cause drowsiness. Specific medication should be taken in accordance with medical advice. Gui Fu Di Huang Wan has the medicinal effect of warming and tonifying kidney yang (warming and replenishing kidney yang qi), and the specific indications include lumbar and knee soreness and weakness (the feeling of soreness and weakness in the waist and knees), cold limbs, frequent urination and other symptoms. Note that the product is contraindicated in people who are allergic to the product, pregnant women, and is not suitable for patients with diabetes, high blood pressure, heart disease, chronic nephritis. At present, there is no clear information about the possible adverse effects of the drug during its use, so it is generally believed that the drug does not cause drowsiness. In addition, it should be noted that it is not advisable to take erythromelane or preparations related to erythromelane during the administration of the drug. Specific use of the drug should be carried out under the guidance of a specialist, and should not be used without authorization.