Calan SR

Definition

Calan SR is a sustained-release formulation of verapamil, a calcium channel blocker used to manage hypertension, angina, and certain types of dysrhythmias. It works by inhibiting the influx of calcium ions into cardiac and smooth muscle cells.

5 Must Know Facts For Your Next Test

1. Calan SR is primarily used to treat hypertension and chronic stable angina.
2. It belongs to the class of drugs known as non-dihydropyridine calcium channel blockers.
3. Calan SR can also be used to manage supraventricular tachycardia and control ventricular rate in atrial fibrillation.
4. Common side effects include constipation, dizziness, and headache.
5. Patients should avoid grapefruit juice while taking Calan SR as it can increase drug levels in the blood.

Review Questions

• What conditions are primarily treated with Calan SR?
• How does Calan SR function at the cellular level?
• What are some common side effects associated with Calan SR?

Related terms

Verapamil: A calcium channel blocker that relaxes blood vessels and reduces heart rate.

Diltiazem: Another non-dihydropyridine calcium channel blocker used for similar indications as Calan SR.

Amlodipine: A dihydropyridine calcium channel blocker mainly used for hypertension and angina but works differently from non-dihydropyridines.