Diltiazem CS Capsule 300mg/24hr
Generic For: Cardizem CD
Diltiazem CS 300mg/24hr is a once-daily extended-release capsule, the generic equivalent of Cardizem CD. It is a calcium channel blocker used to treat high blood pressure and chronic stable angina (chest pain). Your order ships from a licensed U.S. pharmacy after a valid prescription is confirmed and reviewed by a healthcare provider.
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90-day supply · $0.67/capsule
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Buy Diltiazem CS Capsule 300mg/24hr (Cardizem CD) Online
A calcium channel blocker capsule for high blood pressure and chronic stable angina
Diltiazem CS Capsule 300mg/24hr Quick Facts
| Drug class | Calcium channel blocker |
|---|---|
| Treats | High blood pressure, chronic stable angina |
| Form | Capsule |
| Typical dosing | Take 1 capsule by mouth daily. |
| Prescription required | Yes — prescription only |
What Is Diltiazem CS Capsule 300mg/24hr?
Diltiazem CS 300mg/24hr is an extended-release capsule form of diltiazem, sold under the brand name Cardizem CD. It belongs to a class of medications called calcium channel blockers, which relax blood vessels and reduce the heart's workload. It is taken once daily to lower blood pressure and to help prevent chest pain caused by chronic stable angina. Lowering blood pressure can reduce the risk of stroke, heart attack, and kidney problems over time.
What Does Diltiazem CS Capsule 300mg/24hr Treat?
High blood pressure (hypertension)
Chronic stable angina (chest pain)
Used alone or with other blood pressure medications
Long-term prevention of angina episodes
Diltiazem CS Capsule 300mg/24hr Dosage
Hypertension: 180–240 mg by mouth once daily initially; usual range 240–360 mg once daily; max 480 mg/day.
Chronic stable angina: 120–180 mg by mouth once daily initially; titrate as needed; max 480 mg/day.
Swallow capsule whole; do not crush or chew.
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Diltiazem CS Capsule 300mg/24hr Side Effects
Common side effects
- Headache
- Dizziness
- Swelling of the ankles or feet (edema)
- Fatigue or weakness
- Slow heart rate
- Nausea
- Constipation
- Flushing
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Very slow or irregular heartbeat
- Fainting or severe lightheadedness
- New or worsening heart failure symptoms (shortness of breath, swelling)
- Signs of liver problems (yellowing skin/eyes, dark urine)
- Severe skin reactions (rash, blistering, peeling)
Warnings & Interactions
Do not use with sick sinus syndrome or second/third-degree AV block without a pacemaker
Contraindicated in severe hypotension (systolic BP below 90 mmHg)
Use caution with beta-blockers due to additive effects on heart rate and conduction
May worsen heart failure in patients with impaired ventricular function
Monitor liver function; rare liver injury has been reported
Interacts with statins (simvastatin), cyclosporine, and other CYP3A4 substrates
Do not stop suddenly without talking to your provider
Tell your prescriber about all medications, supplements, and health conditions before starting diltiazem cs capsule 300mg/24hr.
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