Amlodipine is only part of a complete program of treatment that may also include diet, exercise, weight control, and other medications. The usual starting dose is 5 milligrams taken once a day. Norvasc is used for the treatment and prevention of angina resulting from coronary artery spasm. Check with your doctor before you stop taking Amlodipine, as a slow reduction in the dose may be needed. The usual starting dose is 5 milligrams taken once a day. It is known that Norvasc may cause an upset stomach.