Statins: Separating Myth From Guidance
Statins: what people commonly get wrong, set against what published UK guidance says.
They are among the most studied medicines in use and among the most stopped, usually over muscle aches that blinded trials attribute largely to expectation.
Key takeaways
- Mechanism: inhibit HMG-CoA reductase in the liver
- Common starting dose, primary prevention: atorvastatin 20mg
- Most useful single change: Discuss a different statin or a lower dose before stopping altogether.
- Commonest mistake: Stopping because of aches without speaking to your GP.
- See a doctor if any of the signs under "When to speak to a doctor" below apply to you.
What the guidance actually says
Before the corrections, the published figures. Everything below is measured against these.
| Measure | Figure |
|---|---|
| Mechanism | inhibit HMG-CoA reductase in the liver |
| Common starting dose, primary prevention | atorvastatin 20mg |
| NICE risk threshold to offer | 10 per cent ten-year risk |
| Most reported side effect | muscle aches |
| Monitoring | liver function before starting and within the first year |
Where people go wrong
Each of these is common, and each is a mistake in the sense that the guidance says otherwise.
- Stopping because of aches without speaking to your GP
- Grapefruit juice with some statins
- Continuing in pregnancy or while trying to conceive
What to do instead
- Discuss a different statin or a lower dose before stopping altogether
- Take it at the time of day you will actually remember
- Keep taking it long term; the benefit accrues over years
- Report muscle symptoms rather than stopping silently
The part that is genuinely uncertain
Guidance changes, and it changes because evidence does. The figures above reflect current UK guidance from the bodies named at the foot of this page; where those bodies revise their position, theirs is the account to follow rather than this one.
Where to go next
- What Statins Is, and Why It Matters
- A Working Checklist for Statins
- Statins — the reference entry
- Blood Pressure: What the Evidence Actually Says
- Cholesterol: Sorting the Evidence From the Noise
When to speak to a doctor
Contact a doctor urgently for severe, widespread muscle pain or weakness, especially with dark brown urine, which can indicate rhabdomyolysis. Also seek advice for yellowing of the skin or eyes, or unusual tiredness with loss of appetite. Stop before conceiving and during pregnancy.
Where this comes from
How this page was put together
Every figure, recommendation and warning above is taken from the guidance named in Where this comes from. Nothing on this page is inferred, summarised or generalised beyond what those bodies publish: where they give a number, it is their number, and where they are silent, so are we. Pages are rebuilt whenever the underlying record changes. Sign-off by a named clinician, where it has happened, is shown at the top of the page along with the date.
Medical disclaimer
This article is general information, not medical advice. It cannot account for your own history, medication or circumstances. Always speak to a GP, pharmacist or another qualified health professional before making changes that affect your treatment, and never delay seeking medical advice because of something you have read here. In an emergency, call 999.
Spotted something wrong? Report an error on this page. We correct on the page and say what changed.
