Nifedipine extended-release (ER) tablets, a calcium channel blocker, are used to treat high blood pressure (hypertension) and control angina (chest pain). They are designed to release medication slowly over 24 hours to provide a consistent effect. 

Key Information

• Usage: Prescribed for high blood pressure and chronic stable or vasospastic angina. It is also used off-label for conditions like Raynaud's syndrome.

• Dosage: Taken once daily. Doses usually start at 30 mg or 60 mg and can be increased by a doctor, typically over a 7 to 14 day period. The maximum recommended dose is often 90 mg or 120 mg daily, depending on the specific brand.