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Cartia Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Cartia XT (diltiazem hydrochloride) Extended-Release is used to treat hypertension (high blood pressure), angina (chest pain), and certain heart rhythm disorders. It is a calcium channel blocker. This medication is available in generic form. Common side effects include dizziness, lightheadedness, weakness, nausea, flushing, and headache.
The starting dose of Cartia XT to treat hypertension ranges from 180 to 240 mg once daily. To treat angina, the starting dose range is 120 or 180 mg once daily. Cartia XT may interact with amiodarone, buspirone, carbamazepine, cimetidine, cyclosporine, digoxin, lovastatin, rifampin, quinidine, sedatives, antibiotics, antifungal medications, beta-blockers, or HIV/AIDS medicines. Tell your doctor all medications you use. Cartia XT should be used only when prescribed during pregnancy. This drug passes into breast milk and may have undesirable effects on a nursing infant. Consult your doctor before breastfeeding.
Our Cartia XT (diltiazem hydrochloride) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Cartia in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- a red, blistering skin rash;
- swelling in your hands or feet;
- trouble breathing;
- slow heartbeats;
- dizziness, fainting, fast or pounding heartbeat;
- upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes); or
- severe skin reaction -- fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.
Less serious side effects may include:
- dizziness, weakness, tired feeling;
- upset stomach, nausea;
- sore throat, cough, stuffy nose; or
- flushing (warmth, redness, or tingly feeling).
Read the entire detailed patient monograph for Cartia (Diltiazem Hydrochloride Extended Release Capsules) »
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Cartia FDA Prescribing Information: Side Effects
Serious adverse reactions have been rare in studies carried out to date, but it should be recognized that patients with impaired ventricular function and cardiac conduction abnormalities have usually been excluded from these studies.
The following table presents the most common adverse reactions reported in placebocontrolled angina and hypertension trials in patients receiving diltiazem hydrochloride extended-release capsule (once-a-day dosing) product up to 360 mg with rates in placebo patients shown for comparison.
Diltiazem Hydrochloride Extended-release Capsule (once-a-day)
Placebo-controlled Angina and Hypertension Trials Combined
|Adverse Reactions||Diltiazem Extended-release|
|AV Block First-Degree||3.3%||0.0%|
In clinical trials of diltiazem hydrochloride extended-release capsules (Once A Day Dosage), diltiazem hydrochloride tablets and diltiazem hydrochloride extended-release capsules involving over 3200 patients, the most common events (i.e., greater than 1%) were edema (4.6%), headache (4.6%), dizziness (3.5%), asthenia (2.6%), first-degree AV block (2.4%), bradycardia (1.7%), flushing (1.4%), nausea (1.4%) and rash (1.2%).
In addition, the following events were reported infrequently (less than 1%) in angina or hypertension trials:
Cardiovascular: Angina, arrhythmia, AV block (second- or third-degree), bundle branch block, congestive heart failure, ECG abnormalities, hypotension, palpitations, syncope, tachycardia, ventricular extrasystoles.
Gastrointestinal: Anorexia, constipation, diarrhea, dry mouth, dysgeusia, dyspepsia, mild elevations of SGOT, SGPT, LDH, and alkaline phosphatase (see hepatic warnings), thirst, vomiting, weight increase.
Other: Amblyopia, CPK increase, dyspnea, epistaxis, eye irritation, hyperglycemia, hyperuricemia, impotence, muscle cramps, nasal congestion, nocturia, osteoarticular pain, polyuria, sexual difficulties.
The following postmarketing events have been reported infrequently in patients receiving diltiazem: allergic reactions, alopecia, angioedema (including facial or periorbital edema), asystole, erythema multiforme (including Stevens-Johnson syndrome, toxic epidermal necrolysis), exfoliative dermatitis, extrapyramidal symptoms, gingival hyperplasia, hemolytic anemia, increased bleeding time, leukopenia, purpura, retinopathy, myopathy, and thrombocytopenia. In addition, events such as myocardial infarction have been observed which are not readily distinguishable from the natural history of the disease in these patients. A number of well-documented cases of generalized rash, some characterized as leukocytoclastic vasculitis, have been reported. However, a definitive cause and effect relationship between these events and diltiazem therapy is yet to be established.
Read the entire FDA prescribing information for Cartia (Diltiazem Hydrochloride Extended Release Capsules) »
Additional Cartia XT Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Get tips on handling your hypertension.