How long it takes for the anxiolytic effects of venlafaxine to take effect depends on the sensitivity of the patient to the drug. Venlafaxine is a 5-hydroxytryptamine and norepinephrine reuptake inhibitor with antidepressant and anxiolytic effects, and is commonly used in bed to treat depression, anxiety, somatization disorders, and other psychological disorders. In general, oral griseofulvin will take effect within 1-2 weeks, but because some patients are sensitive to griseofulvin or not drug-dependent, they may feel improvement in their discomfort about 3-5 days after taking the drug. However, for patients who have been taking the drug for a long time or for multiple courses of treatment, the time to take effect after taking the drug may be relatively longer if the body has developed tolerance to the drug. Therefore, the duration of the anxiolytic effect of venlafaxine depends on the sensitivity of the patient to the drug. Patients are advised to take venlafaxine at relatively regular intervals, with food or as a whole tablet immediately after a meal, and to avoid breaking, chewing or soaking it. The most common adverse effects of venfaraxine are weakness, fatigue, excessive sweating, increased blood pressure, flushing, decreased appetite, nausea, vomiting, weight loss, decreased libido, etc. Therefore, it is important to follow the doctor’s instructions and use the medication according to the course of treatment, and not to increase the dosage on your own.