There is no exact time for how long it takes to get side effects from taking amlodipine benzenesulfonate, and different patients react differently to the drug. Amlodipine benzenesulfonate has the effect of inhibiting the inward flow of calcium ions and lowering blood pressure by dilating peripheral blood vessels, and the adverse reactions may also be related to the therapeutic effect of the drug. Different patients react differently to the drug, and most patients have no significant adverse reactions after taking the drug. Individual patients can experience symptoms such as flushing and palpitations right after taking the drug, and with the prolongation of the drug, symptoms such as lower limb edema and gingival hyperplasia can also occur, but there is no specific time. Patients with severe hypotension and severe arterial stenosis should not use this drug. When taking amlodipine benzenesulfonate, pay attention to the adverse effects of the drug and communicate with your doctor if you have any uncomfortable symptoms.