You should not take this medication if you are allergic to isradipine.
Before taking isradipine, tell your doctor if you have kidney or liver disease, congestive heart failure, or a narrowing or blockage in your digestive tract.
Do not crush, chew, or break an extended-release tablet. Swallow the pill whole. Breaking the pill may cause too much of the drug to be released at one time.
Isradipine can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.
Some tablet forms of isradipine are made with a shell that is not absorbed or melted in the body. Therefore, you may see what looks like part of a tablet in your stool. This is a normal side effect of isradipine and will not make the medication less effective.
Keep using this medicine as directed, even if you feel well. High blood pressure often has no symptoms, so you may not know when your blood pressure is high. You may need to use blood pressure medication for the rest of your life.
To be sure this medication is helping your condition, your blood pressure will need to be checked on a regular basis. Do not miss any scheduled appointments.