March 27, 2017
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Cardizem LA

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Cardizem LA




Side Effects
Interactions

SIDE EFFECTS

The following adverse reactions are described in greater detail, in other sections:

Clinical Trials Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

For the hypertension studies, the following table presents adverse reactions more common on diltiazem than on placebo (but excluding events with no plausible relationship to treatment), as reported in placebo-controlled hypertension trials in patients receiving a diltiazem hydrochloride extended-release formulation (once-a-day dosing) up to 540 mg.

Adverse Reactions (MedDRA Term) Placebo Diltiazem hydrochloride extended-release
n=120 # pts. (%) 120-360 mg
n=501 # pts. (%)
540 mg
n=123 # pts. (%)
Edema lower limb 4 (3) 24 (5) 10 (8)
Sinus congestion 0 (0) 2 (1) 2 (2)
Rash 0 (0) 3 (1) 2 (2)

In the angina study, the adverse event profile of CARDIZEM LA was consistent with what has been previously described for CARDIZEM LA and other formulations of diltiazem HCl. The most frequent adverse effects experienced by CARDIZEM LA-treated patients were edema lower-limb (6.8%), dizziness (6.4%), fatigue (4.8%), bradycardia (3.6%), first-degree atrioventricular block (3.2%), and cough (2%).

In addition, the following events have been reported infrequently (less than 1%) in angina or hypertension trials:

Cardiovascular: Angina, bundle branch block, palpitations, syncope, tachycardia, ventricular extrasystoles [see WARNINGS AND PRECAUTIONS].

Nervous System: Abnormal dreams, amnesia, depression, gait abnormality, hallucinations, insomnia, nervousness, paresthesia, personality change, somnolence, tinnitus, tremor.

Gastrointestinal: Anorexia, constipation, diarrhea, dry mouth, dysgeusia, dyspepsia, thirst, vomiting, weight increase.

Dermatological: Petechiae, photosensitivity, pruritus, urticarial [see WARNINGS AND PRECAUTIONS].

Other: Amblyopia, CPK increase, dyspnea, epistaxis, eye irritation, hyperglycemia, hyperuricemia, impotence, muscle cramps, nasal congestion, nocturia, osteoarticular pain, polyuria, sexual difficulties.

Post-Marketing Experience

The following adverse reactions have been identified during post-approval use of diltiazem. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to estimate their frequency or establish a causal relationship to drug exposure.

The following post-marketing reactions have been reported infrequently in patients receiving diltiazem: acute generalized exanthematous pustulosis, allergic reactions, alopecia, angioedema (including facial or periorbital edema), erythema multiforme, extrapyramidal symptoms, gingival hyperplasia, hemolytic anemia, increased bleeding time, leukopenia, photosensitivity (including lichenoid keratosis and hyperpigmentation at sun-exposed skin areas), 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.

Read the Cardizem LA (diltiazem) Side Effects Center for a complete guide to possible side effects

DRUG INTERACTIONS

Agents Known To Impair Cardiac Contractility And Conduction

Using other agents known to affect cardiac conduction or contractility with diltiazem may increase the risk of bradycardia, AV block, and heart failure [see WARNINGS AND PRECAUTIONS].

Interactions With Cytochrome P-450 3A4 Substrates, Inhibitors And Inducers

Diltiazem is both a substrate and an inhibitor of the cytochrome P-450 3A4 enzyme system.

Simvastatin: Limit daily dose of simvastatin 10 mg and diltiazem to 240 mg, if co-administration of both drugs are required [see Drug Interactions under CLINICAL PHARMACOLOGY].

Rifampin: Avoid co-administration of rifampin with diltiazem [see Drug Interactions under CLINICAL PHARMACOLOGY].

Read the Cardizem LA Drug Interactions Center for a complete guide to possible interactions

This monograph has been modified to include the generic and brand name in many instances.

Last reviewed on RxList: 10/17/2016

Side Effects
Interactions

Cardizem LA - User Reviews

Cardizem LA User Reviews

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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.


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