Amlodipine — Blood Pressure Medication Guide | KiwiMeds
✅ Reviewed by a Registered Pharmacist NZ | Last updated: May 2026 | This information is for educational purposes only and does not replace advice from your doctor or pharmacist.
What is amlodipine?
Amlodipine is a calcium channel blocker — a common type of blood pressure medicine prescribed to many New Zealanders. It relaxes and widens the blood vessels, making it easier for your heart to pump blood. It is used for hypertension (high blood pressure) and angina (chest pain). Generic amlodipine is funded by Pharmac.
What is it used for? (NZ context)
Amlodipine is prescribed for high blood pressure (hypertension), angina (chest pain due to coronary artery disease), and some types of heart disease. It is funded by Pharmac and widely available at pharmacies throughout New Zealand.
How does it work?
Amlodipine blocks calcium from entering the smooth muscle cells of blood vessel walls. Calcium normally causes these muscles to contract and narrow the vessels. By blocking it, amlodipine causes vessels to relax and widen (vasodilation), which lowers blood pressure and allows more blood to reach the heart.
How to take it
Always take amlodipine exactly as directed by your doctor or pharmacist. Do not stop or change your dose without medical advice.
Common side effects
- Ankle and leg swelling (oedema) — most common side effect
- Flushing (feeling of warmth, redness)
- Headache
- Dizziness, especially when standing up quickly
- Fatigue
- Palpitations
Serious side effects to watch for
Rarely, amlodipine can cause a severe allergic reaction. More seriously, in some people with severe heart failure, it may worsen symptoms. Tell your doctor if you experience chest pain getting worse, severe dizziness, or irregular heartbeat.
Important drug interactions
- Other blood pressure medicines — enhanced blood pressure lowering (usually intentional but monitored)
- Simvastatin (a statin) — amlodipine can increase simvastatin levels; doses may need adjusting
- Cyclosporine (immune suppressant) — amlodipine increases its levels
- Grapefruit juice — can modestly increase amlodipine levels
NZ-specific information
Pharmac funding: Amlodipine is fully funded in New Zealand. Available as generic tablets (5mg, 10mg). Brand names in NZ: Norvasc (branded), generic amlodipine (funded). Timing: Can be taken at any time of day, with or without food.
Frequently asked questions
How long does it take to work? You may notice some effect within 1-2 days, but it can take several weeks for the full blood pressure lowering effect. What if I miss a dose? Take it as soon as you remember, unless it is nearly time for your next dose. Never double dose.
Related medications
Metoprolol (blood pressure/heart) | Atorvastatin (cholesterol) | Metformin (diabetes)
Always talk to your pharmacist or doctor for personalised advice. This information is general and educational — it does not replace a consultation with your healthcare provider.
References & Further Information
The following New Zealand and international resources were used to inform this page: