Atorvastatin — Cholesterol 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 atorvastatin?
Atorvastatin is a statin — one of the most widely prescribed cholesterol-lowering medicines in New Zealand. You may know it by the brand name Lipitor, though generic atorvastatin is what is most commonly dispensed. It belongs to a group of medicines that work in the liver to reduce the production of cholesterol.
What is it used for? (NZ context)
Atorvastatin is prescribed to lower LDL (bad) cholesterol and reduce the risk of heart attacks and strokes. It is funded by Pharmac for eligible patients in New Zealand, making it accessible and affordable for most New Zealanders.
How does it work?
Atorvastatin blocks an enzyme called HMG-CoA reductase in your liver — this enzyme is responsible for producing cholesterol. By blocking it, atorvastatin reduces the amount of cholesterol your liver makes, and also prompts your liver to clear more LDL cholesterol from your blood.
How to take it
Always take atorvastatin exactly as directed by your doctor or pharmacist. Do not stop or change your dose without medical advice.
Common side effects
- Muscle aches or weakness (mild) — usually temporary
- Headache
- Nausea or stomach discomfort
- Joint pain
- Constipation or diarrhoea
Serious side effects to watch for
Rarely, statins can cause significant muscle damage (myopathy) or a serious condition called rhabdomyolysis. Contact your doctor if you experience unexplained muscle pain, weakness, or dark urine. Liver problems are also rare — your doctor may check your liver function periodically.
Important drug interactions
- Grapefruit juice — can increase atorvastatin levels in your blood, increasing side effect risk. Avoid large amounts of grapefruit.
- Some antibiotics (e.g. erythromycin, clarithromycin) — can interact and increase statin levels
- Gemfibrozil and other fibrates — combination increases muscle risk; discuss with your doctor
- Some blood-thinning medicines (warfarin) — atorvastatin can affect their levels
NZ-specific information
Pharmac funding: Atorvastatin is fully funded on the Pharmaceutical Schedule. Generic atorvastatin (10mg, 20mg, 40mg, 80mg tablets) is widely available. Brand names in NZ: Lipitor (may not be funded), generic atorvastatin (funded). Medsafe approved: Yes.
Frequently asked questions
Do I need to take it forever? Often yes — stopping atorvastatin usually means cholesterol levels return to previous levels. Talk to your doctor before stopping. Can I take it at any time of day? Yes — unlike some older statins, atorvastatin can be taken at any time of day, though taking it at the same time each day helps with consistency.
Related medications
Metformin (diabetes) | Amlodipine (blood pressure) | Metoprolol (heart/blood pressure)
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: