Keep all appointments with your doctor and the laboratory so that your response to the drug can be monitored. While taking this medication, your health care provider may tell you to take and record your pulse daily. Your provider will tell you how rapid your pulse should be. If your pulse is slower than advised, contact your doctor about taking your channel blocker that day. Food and drug interactions Do not eat grapefruit or drink grapefruit juice while taking a calcium channel blocker.
Alcohol interferes with the effects of calcium channel blockers and increases the side effects.
It should be avoided while taking this medication. Drowsiness or increased appetite. Contact your doctor if these side effects are persistent or severe. Weight gain, breathing difficulty, coughing or wheezing, irregular or slow heartbeat, skin rash. Contact your doctor right away.