Common Use

Calan is prescribed for treating various cardiovascular conditions, including hypertension, hypertensive crisis, primary pulmonary hypertension, stenocardia, supraventricular tachycardia, sinus tachycardia, atrial tachyarrhythmia, atrial flutter, and atrial arrhythmia.

Dosage and Direction

Patients with stenocardia or supraventricular tachycardia should take Calan three times daily, while those with arterial hypertension should take it twice daily. The dosage varies based on the specific condition, age, and severity of the disease. Always consult your doctor before starting the medication.

Precautions

Calan may affect thinking or reaction times, so caution is advised when driving or performing tasks requiring focus and quick responses. Avoid standing up too quickly from a sitting or lying position to prevent dizziness. Limit alcohol consumption and consult your doctor if you drink grapefruit juice, as it may interact with Calan and cause potentially harmful effects.

Contraindications

Calan is contraindicated in cases of hypersensitivity, severe arterial hypotension, pregnancy, breastfeeding, atrioventricular block (first and second degree), sinoatrial blockade, sick sinus syndrome (except in patients with a pacemaker), Wolff-Parkinson-White syndrome (WPW), and Lown-Ganong-Levine syndrome when combined with atrial fibrillation/flutter. Certain other conditions may also require careful use. Only take Calan as prescribed by your physician.

Possible Side Effects

Common side effects of Calan include constipation, dizziness, nausea, low blood pressure, and headaches. Seek immediate medical attention if you experience serious symptoms such as chest pain, irregular heart rhythm (arrhythmia), slow heart rate (bradycardia), heart attack, stroke, significant water retention, difficulty breathing, very low blood pressure (dizziness, lightheadedness, or fainting), hallucinations, or signs of an allergic reaction (rash, hives, itching, swelling, wheezing, or difficulty breathing/swallowing).

Drug Interaction

Combining Calan with a beta blocker may result in dangerous heart slowing. This medication can increase blood levels of digoxin, theophylline, carbamazepine, and myorelaxants, necessitating monitoring to avoid toxicity. In some cases, it may reduce blood levels of lithium.

Missed Dose

If you miss a dose, take it as soon as you remember, unless it is almost time for your next scheduled dose. In that case, skip the missed dose. Do not double the dose to compensate for a missed one.

Overdose

If you suspect an overdose of Calan and experience symptoms like a slow heartbeat or fainting, seek immediate medical assistance.

Storage

Store Calan at room temperature, between 15-30°C (59-86°F), in a light-resistant container.

Disclaimer

The information provided here is general and does not cover all possible directions, drug interactions, or precautions. It should not be used for self-treatment or self-diagnosis. Always consult your healthcare provider for personalized advice. We are not responsible for any errors in this information or for any consequences resulting from its use or from self-treatment.