Continue to take Amlodipine and talk to your doctor if you are sensitive to or have ever had an allergic reaction to Norvasc, do not start or stop taking your other medicines including any other blood pressure medicines, without talking to your healthcare provider. Amlodipine is only part of a complete program of treatment that may also include diet, exercise, weight control, and other medications. The side effects of Amlodipine. In the dose may be needed. Amlodipine is used to treat high blood pressure, you must take Norvasc regularly for it to be effective. Amlodipine relaxes the blood vessels, making it easier for the heart to pump and reducing its workload.