Trazodone Hydrochloride Tablet side effects usually disappear gradually after stopping the medication, mostly within 3 to 7 days. Recovery time may vary depending on individual constitution, as well as the severity of symptoms. 1. Trazodone Hydrochloride Tablet is an antidepressant that treats various types of depression and anxiety disorders. Common side effects include weakness, drowsiness, dizziness, blurred vision, constipation, tachycardia, nausea and vomiting. 2. If the symptoms are mild, the above symptoms usually disappear in 3 days after stopping the drug. If the symptoms are more severe and obvious, they usually disappear in 7 days at the latest. The drug should be taken according to the doctor’s instructions. If side effects occur during the course of taking the drug, you should consult a doctor in time to avoid adverse consequences.