Understanding Opioids for Long-Term Pain: A Plain-English Explainer
Opioids for Long-Term Pain: what it is, why it matters, and what published guidance actually asks of you.
Benefit for long-term non-cancer pain is small and often temporary, while harms accumulate, and stopping becomes harder the longer they continue.
Key takeaways
- Not recommended to start: for chronic primary pain
- Long-term benefit: limited evidence in non-cancer pain
- Most useful single change: Review regularly with a clear plan and agreed goals.
- Commonest mistake: Stopping abruptly, which causes withdrawal.
- See a doctor if any of the signs under "When to speak to a doctor" below apply to you.
The short answer
Strong painkillers derived from or acting like opium, used for persistent pain.
Where it fits
This is part of Chronic Pain. Guidance sets out what to look for and what to do about it, which is what the rest of this page covers.
The numbers, in one place
| Measure | Figure |
|---|---|
| Not recommended to start | for chronic primary pain |
| Long-term benefit | limited evidence in non-cancer pain |
| Harms | tolerance, dependence, constipation, hormonal effects, falls |
| Above 120mg morphine equivalent a day | harms rise markedly without added benefit |
| Tapering | should be slow and planned, never abrupt |
What that means in practice
In everyday terms:
- Review regularly with a clear plan and agreed goals
- Reduce slowly and with support if benefit is unclear
- Ask about exercise and psychological therapies alongside
- Take laxatives if constipation develops; it rarely resolves alone
What gets people into trouble
What to watch out for:
- Stopping abruptly, which causes withdrawal
- Escalating the dose when benefit fades
- Combining with alcohol, benzodiazepines or gabapentinoids without review
Where to go next
- Opioids for Long-Term Pain: The Practical To-Do List
- Opioids for Long-Term Pain: Separating Myth From Guidance
- Opioids for Long-Term Pain — the reference entry
- The Evidence on Neuropathic Pain, Without the Hype
- Fibromyalgia: What the Evidence Actually Says
When to speak to a doctor
Call 999 for slow or shallow breathing, extreme drowsiness, pinpoint pupils, or inability to wake someone taking opioids — this is an overdose and naloxone may be needed. Never stop long-term opioids abruptly. Seek urgent advice for confusion, severe constipation with vomiting, or a fall.
Where this comes from
- NICE — Chronic pain in over 16s
- Faculty of Pain Medicine — Opioids Aware
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.
