Cardizem and Cardizem CD (a controlled release form of diltiazem) are used in the treatment of angina pectoris (chest pain usually caused by lack of oxygen to the heart due to clogged arteries). Cardizem, Cardizem CD, and Cardizem LA (an extended-release, once-a-day tablet form of diltiazem) are used to control chronic stable angina (caused by exertion). Cardizem CD and Cardizem LA are also used to treat high blood pressure. Another controlled release form, Cardizem SR, is used only in the treatment of high blood pressure. Cardizem, a calcium channel blocker, dilates blood vessels and slows the heart to reduce blood pressure and the pain of angina.
Doctors sometimes prescribe Cardizem for loss of circulation in the fingers and toes (Raynaud's phenomenon), for involuntary movements (tardive dyskinesia), and to prevent heart attack.
Tiazac and Dilacor XR are used in the treatment of high blood pressure and chronic stable angina. They may be taken alone or combined with other blood pressure medications.
If you are taking Cardizem for high blood pressure, remember that it does not cure the problem; it merely controls it. You may need to take a blood pressure medication for the rest of your life.
If you are taking Cardizem for angina, do not stop suddenly. This can lead to an increase in your attacks.
- weakness;
- rash;
- nausea;
- headache;
- flushing (more common with cardizem sr cardizem la and cardizem cd);
- fluid retention;
- fatigue;
- dizziness;
- abnormally slow heartbeat (more common with cardizem sr cardizem la and cardizem cd);
ADULTS
Dosage levels are determined by each individual's needs.
Cardizem
The average daily dosage is between 180 mg and 360 mg, divided into 3 or 4 smaller doses.
Cardizem SR
The recommended starting dosage is 60 to 120 mg 2 times a day, to be increased to 240 to 360 mg a day.
Cardizem CD
This is a once-a-day form of Cardizem. For high blood pressure, starting doses range from 180 to 240 mg; for angina, 120 to 180 mg.
Cardizem LA
This is also a once-a-day drug. For high blood pressure, when used alone, doses start at 180 to 240 mg and may be increased to as much as 540 mg once daily. For angina, the starting dose is 180 mg once daily with increases every 7 to 14 days if necessary.
Dilacor XR
This is another once-a-day drug. For high blood pressure, doses start at 180 to 240 mg and may be increased to as much as 540 mg. For angina, doses start at 120 mg and may be increased to 480 mg.
Tiazac
The usual starting dose for high blood pressure is 120 to 240 mg once a day. After the drug has taken effect--in about 2 weeks--the dose can range from 120 to 540 mg. For angina, once-daily doses start at 120 to 180 mg and may be increased to 540 mg if necessary.
CHILDREN
Safety and effectiveness in children have not been established.
