Dihydropyridine calcium channel blocker list?

Which dihydropyridine calcium channel blockers are commonly used?

Dihydropyridine (DHP) calcium channel blockers lower blood pressure by relaxing vascular smooth muscle. Common DHPs include:
- Amlodipine
- Nifedipine (including extended-release forms)
- Felodipine (often extended-release)
- Nicardipine
- Isradipine
- Lacidipine
- Lercanidipine
- Nimodipine
- Nisoldipine
- Verapamil and diltiazem are not dihydropyridines (they are non-dihydropyridine agents).

What’s the difference between “immediate-release” and “extended-release” nifedipine?

Nifedipine is available in different formulations. Immediate-release nifedipine can act faster, while extended-release formulations are designed to release the drug more slowly and are often used to reduce fluctuation in drug levels.

Which DHPs are often used for specific conditions?

• High blood pressure: amlodipine, nifedipine ER, felodipine ER, lercanidipine, nicardipine (varies by setting)
  
• Angina (commonly): amlodipine and nifedipine preparations are frequently used
  
• Hypertensive emergencies (hospital use): nicardipine is commonly used in acute settings
  
  

Are there any safety issues patients ask about?

Common DHP side effects include ankle/leg swelling (peripheral edema), flushing, headache, dizziness, and sometimes reflux-like symptoms. Peripheral edema is particularly common with some DHPs (notably amlodipine). If you tell me which specific drug name(s) you’re considering, I can flag the most relevant side-effect and interaction considerations.