If you’ve been handed a prescription for Calan, you’re probably dealing with high blood pressure, angina, or an irregular heartbeat. Calan is the brand name for verapamil, a calcium‑channel blocker that relaxes blood vessels and slows heart rate. By stopping calcium from entering muscle cells, it reduces the force of each beat and widens arteries, making it easier for blood to flow.
The usual adult dose starts at 80 mg once daily for hypertension, but doctors often split it into two doses (morning and evening) to keep levels steady. For angina or arrhythmias, the dose may be higher—up to 480 mg per day—but only under medical supervision.
Swallow the tablet whole with a full glass of water. Don’t crush or chew it; breaking the pill can change how quickly the drug is absorbed and increase side‑effects. If you miss a dose, take it as soon as you remember—unless it’s almost time for your next one. In that case, skip the missed dose; double‑dosing can cause dizziness or a dangerously slow heart rate.
Most people feel fine, but about 1 in 5 notice something off:
Rarely, severe allergic reactions—rash, itching, swelling of the face or throat—can happen. Treat it as an emergency and seek help immediately.
Another practical tip: avoid grapefruit juice while on Calan. The fruit can raise verapamil levels in your blood, increasing side‑effects. Alcohol isn’t banned, but heavy drinking may amplify dizziness.
Finally, keep track of any other medicines you’re using. Verapamil interacts with beta‑blockers, digoxin, and certain anti‑arrhythmics. A quick chat with your pharmacist can prevent nasty surprises.
In short, Calan is a solid option for managing heart‑related issues when taken as directed. Stick to the prescribed schedule, watch for side effects, and stay in touch with your doctor for dose tweaks. With those basics covered, you’ll get the most benefit from this calcium‑channel blocker without unnecessary hassle.
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