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Side Effects > Verelan

Verelan Side Effects

Generic Name: Verapamil

Please note - some side effects for Verelan may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA at http://www.fda.gov/medwatch/ or 1-800-FDA-1088 (1-800-332-1088).


For the consumer

For the professional

Side Effects of Verelan - for the consumer


Verelan PM Capsules Controlled Onset

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Verelan PM Capsules Controlled Onset:

Constipation; dizziness; fatigue; headache; lightheadedness; nausea.

Seek medical attention right away if any of these SEVERE side effects occur when using Verelan PM Capsules Controlled Onset:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; lightheadedness, especially upon standing; severe dizziness; shortness of breath; swelling of feet or hands; unusually fast, slow or irregular heartbeat.


Verelan Pellet-Filled Capsules

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Verelan Pellet-Filled Capsules:

Constipation; dizziness; fatigue; headache; lightheadedness; nausea.

Seek medical attention right away if any of these SEVERE side effects occur when using Verelan Pellet-Filled Capsules:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain; lightheadedness, especially upon standing; severe dizziness; shortness of breath; swelling of feet or hands; unusually fast, slow, or irregular heartbeat.

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For the professional


Verelan

Serious adverse reactions are uncommon when verapamil HCl therapy is initiated with upward dose titration within the recommended single and total daily dose. See WARNINGS for discussion of heart failure, hypotension, elevated liver enzymes, AV block, and rapid ventricular response. Reversible (upon discontinuation of verapamil) non-obstructive, paralytic ileus has been infrequently reported in association with the use of verapamil.

In clinical trials involving 285 hypertensive patients on Verelan for greater than 1 week the following adverse reactions were reported in greater than 1.0% of the patients:

Constipation 7.4%
Headache 5.3%
Dizziness 4.2%
Lethargy 3.2%
Dyspepsia 2.5%
Rash 1.4%
Ankle Edema 1.4%
Sleep Disturbance 1.4%
Myalgia 1.1%

In clinical trials of other formulations of verapamil HCl (N=4,954) the following reactions have occurred at rates greater than 1.0%:

Constipation 7.3%
CHF/Pulmonary Edema 1.8%
Dizziness 3.3%
Fatigue 1.7%
Nausea 2.7%
Bradycardia (HR<50/min) 1.4%
Hypotension 2.5%
AV block-total 1°, 2°, 3° 1.2%
                    2° and 3° 0.8%
Edema 1.9%
Headache 2.2%
Flushing 0.6%
Rash 1.2%
Elevated Liver Enzymes

In clinical trials related to the control of ventricular response in digitalized patients who had atrial fibrillation or atrial flutter, ventricular rate below 50/min at rest occurred in 15% of patients and asymptomatic hypotension occurred in 5% of patients.

The following reactions, reported in 1.0% or less of patients, occurred under conditions (open trials, marketing experience) where a causal relationship is uncertain; they are listed to alert the physician to a possible relationship:

Cardiovascular: angina pectoris, atrioventricular dissociation, chest pain, claudication, myocardial infarction, palpitations, purpura (vasculitis), syncope.

Digestive System: diarrhea, dry mouth, gastrointestinal distress, gingival hyperplasia.

Hemic and Lymphatic: ecchymosis or bruising.

Nervous System: cerebrovascular accident, confusion, equilibrium disorders, extrapyramidal symptoms insomnia, muscle cramps, paresthesia, psychotic symptoms, shakiness, somnolence.

Respiratory: dyspnea.

Skin: arthralgia and rash, exanthema, hair loss, hyperkeratosis, maculae, sweating, urticaria, Stevens-Johnson syndrome, erythema multiforme.

Special Senses: blurred vision, tinnitis.

Urogenital: gynecomastia, impotence, increased urination, spotty menstruation.

Treatment of Acute Cardiovascular Adverse Reactions

The frequency of cardiovascular adverse reactions which require therapy is rare; hence, experience with their treatment is limited. Whenever severe hypotension or complete AV block occurs following oral administration of verapamil, the appropriate emergency measures should be applied immediately, e.g., intravenously administered isoproterenol HCl, levarterenol bitartrate, atropine (all in the usual doses), or calcium gluconate (10% solution). In patients with hypertrophic cardiomyopathy (IHSS), alpha-adrenergic agents (phenylephrine, metaraminol bitartrate or methoxamine) should be used to maintain blood pressure, and isoproterenol and levarterenol should be avoided. If further support is necessary, inotropic agents (dopamine or dobutamine) may be administered. Actual treatment and dosage should depend on the severity and the clinical situation and the judgment and experience of the treating physician.

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More resources:

Cerner Multum Verelan

PDR Verelan

MedFacts Calan SR Controlled-Release Tablets

MedFacts Verelan PM Capsules Controlled Onset

MedFacts Calan

MedFacts Verelan Pellet-Filled Capsules

MedFacts Covera-HS

Micromedex Verelan - Includes detailed dosage instructions.

FDA Verelan PM

FDA Verelan

FDA Calan

FDA Covera-HS

FDA Verapamil

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