Verapamil HCL ER 180mg
Generic For: Calan SR
Verapamil HCL ER 180mg is the extended-release form of verapamil, sold under the brand name Calan SR, a calcium channel blocker used primarily to treat high blood pressure. By relaxing blood vessels and easing the heart's workload, it helps lower blood pressure over a full 24 hours. After a licensed provider reviews your prescription, your order ships from a licensed U.S. pharmacy.
Compare all Verapamil options →
Select Quantity *
100-day supply · $0.45/tablet
How It Works
- Select your medication
- Licensed providers review & prescribe
- Our licensed U.S. pharmacists fill your prescription
- Delivered to you as soon as the next day
Price: $45.00
HSA/FSA Eligible*Doctor visit fee & delivery cost not included in price. Refills at provider discretion.
Pharmacist Support
Fast Shipping
Licensed U.S. Pharmacy
Buy Verapamil HCL ER 180mg (Calan SR) Online
A calcium channel blocker for high blood pressure, angina, and certain heart rhythm disorders
Verapamil HCL ER 180mg Quick Facts
| Drug class | Calcium channel blocker |
|---|---|
| Treats | High blood pressure, angina, certain arrhythmias |
| Form | Tablet |
| Typical dosing | Take 1 tablet by mouth daily. |
| Prescription required | Yes — prescription only |
What Is Verapamil HCL ER 180mg?
Verapamil HCL ER (Calan SR) is an extended-release calcium channel blocker taken as a once-daily tablet. It works by relaxing the muscles of the heart and blood vessels, which lowers blood pressure and reduces the heart's oxygen demand. The extended-release design delivers medication gradually, allowing steady blood pressure control throughout the day. Other formulations of verapamil are also used for angina and certain heart rhythm disorders.
What Does Verapamil HCL ER 180mg Treat?
High blood pressure (hypertension)
Chronic stable angina (other verapamil formulations)
Vasospastic (Prinzmetal's) angina (other verapamil formulations)
Prevention of paroxysmal supraventricular tachycardia (immediate-release verapamil)
Heart rate control in atrial fibrillation or flutter (immediate-release verapamil)
Verapamil HCL ER 180mg Dosage
Hypertension: 180 mg by mouth once daily in the morning with food.
May titrate based on response to 240 mg once daily; maximum 480 mg/day (given as 240 mg twice daily).
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Verapamil HCL ER 180mg Side Effects
Common side effects
- Constipation
- Dizziness
- Headache
- Fatigue
- Nausea
- Flushing
- Swelling of the ankles or feet (edema)
- Low blood pressure
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Slow heart rate (bradycardia) or heart block
- Worsening heart failure (shortness of breath, rapid weight gain)
- Severe dizziness or fainting
- Signs of liver problems (yellowing skin/eyes, dark urine)
- Severe or persistent low blood pressure
Warnings & Interactions
Do not use with severe left ventricular dysfunction or heart failure
Contraindicated in hypotension (systolic <90 mmHg) and cardiogenic shock
Contraindicated in sick sinus syndrome or 2nd/3rd-degree AV block (without a pacemaker)
Contraindicated in atrial fibrillation/flutter with an accessory bypass tract (e.g., WPW)
Use caution with beta-blockers, digoxin, and other drugs that slow the heart
Avoid grapefruit juice; it can raise verapamil levels
May require dose adjustment in liver or kidney impairment
Tell your prescriber about all medications, supplements, and health conditions before starting verapamil hcl er 180mg.
Talk to U.S.-Based Support
Our licensed pharmacy team in Boca Raton, Florida — real people, no overseas call centers.