Norvasc 5mg (Amlodipine) is a prescription medication manufactured by Pfizer, used to treat high blood pressure and angina. Each pack contains 30 tablets of 5mg strength. This calcium channel blocker works by relaxing blood vessels to improve blood flow. The medication comes in a distinctive blue and white package with the Pfizer logo. Amlodipine belongs to a class of drugs called calcium channel blockers. The tablets should be stored at room temperature away from moisture and heat. This medication requires a prescription and should be taken exactly as prescribed by your healthcare provider. The usual starting dose is one tablet daily, with or without food.