Painkiller Addiction
Painkiller dependency usually develops inside chronic pain management, not outside it. The original pain is real, the medication was genuinely helpful at first, and the shift from pain relief to dependency happened gradually. Treatment that works addresses both the pain and the dependency — not one after the other.
Reviewed by Michael Williams, Treatment Manager, Abbington House
What Painkiller Addiction Looks Like
Painkiller addiction describes a pattern in which dependence on prescribed or over-the-counter pain medication develops to the point that stopping produces significant physical or psychological withdrawal. In this situation, the medication is usually being taken for reasons that have extended beyond the original pain it was prescribed to treat. For most people, these are usually opioids, such as codeine, tramadol, dihydrocodeine, morphine, or oxycodone, where the starting point was a legitimate prescription for injury, surgery, or a chronic condition.
The pattern is usually subtle at first. The prescription was renewed rather than re-evaluated. The dose crept up, or the frequency did. Taking the medication became automatic rather than responsive to pain levels. The boundary between treating the pain and needing the medication blurred.
The word “addiction” doesn’t fit most people in this pattern, because the word suggests chaos, illicit use or moral failure. What is actually happening is dependency; a physiological and psychological adaptation to long-term medication use that develops in most people taking the same drug at the same dose for the same length of time. For a broader picture of how painkiller dependency sits within prescription drug addiction more generally, see our class-level page.
Why Painkiller Addiction Develops
Long-term opioid use leads to tolerance, which means the dose that worked initially is no longer producing the same effect, and either the dose rises or the pain returns. Your nervous system adapts to the constant presence of the drug, which means stopping produces withdrawal symptoms that can feel like a return of the original pain. This combination of tolerance and physical dependency is what makes long-term painkiller prescribing so difficult to unwind, and why dependency is as common as it is.
The scale is larger than most patients realise. A 2024 University of Bristol meta-analysis of 148 studies and 4.3 million chronic pain patients found that nearly one in ten develops opioid dependence or opioid use disorder, and close to one in three shows symptoms of dependence. More than a million UK adults are currently on prescription opioids, with over 50,000 on them for longer than six months. These are ordinary patients who were prescribed medications that, for a significant proportion, were always going to produce this outcome.
Opioids also work less effectively for chronic pain than the original prescription often assumed. According to the Faculty of Pain Medicine’s Opioids Aware resource, the evidence base does not support long-term opioid use for chronic non-cancer pain in most patients, and long-term use typically reduces pain by only around 30% in those who benefit at all. Many patients gain no meaningful long-term benefit. So a significant numbers of long-term opioid patients are taking medication that is no longer effectively treating their pain, while the dependency has continued to deepen.
Chronic Pain and Dependency Together
Chronic Pain and Dependency Together
The single biggest barrier to coming off long-term painkillers is the fear that the pain will return without them. The fear is reasonable because pioid withdrawal can temporarily amplify pain, and the original condition may not have resolved. But the clinical evidence is more reassuring than the short-term fear suggests. NICE guidance on chronic pain (NG193) recommends against starting opioid treatment for chronic primary pain in most circumstances, and supports structured reduction for patients already on long-term opioids, noting that pain outcomes don't worsen — and in some cases improve — once the taper is complete.
One reason for this is a mechanism called opioid-induced hyperalgesia, recognised in NHS and Faculty of Pain Medicine clinical guidance: long-term opioid use can make the nervous system more sensitive to pain signals rather than less. Some patients find that reducing their opioid dose improves their pain over time rather than worsening it. The I-WOTCH trial, conducted by the University of Warwick and James Cook University Hospital and funded by the National Institute for Health and Care Research, found that roughly one in five patients on long-term opioids for chronic non-cancer pain came off the drugs completely within a year — without their pain getting worse — when given structured non-pharmaceutical support alongside the taper.
This does not mean coming off painkillers is easy, or that the pain disappears. It means the fear that keeps many people on long-term opioids — that stopping will leave them with unmanageable pain — is often not borne out in practice. NICE and Opioids Aware both emphasise that reduction should be paced slowly and supported, with non-pharmaceutical pain management introduced alongside. This is where the GP-led approach often falls short: a standard appointment system cannot accommodate the frequency of support and taper adjustment that chronic pain dependency usually needs.
The Risks of Long-Term Painkiller Use
Long-term opioid painkiller use carries clinical risks that are well-documented in Opioids Aware and NHS prescribing guidance but are often under-discussed at the prescribing stage. These include opioid-induced hyperalgesia, hormonal disruption, cognitive and emotional blunting, accidental overdose risk – especially when combined with alcohol or sedatives – and cardiovascular strain. The risks rise with dose and duration.
Opioid-induced hyperalgesia is worth naming again here because it's the risk that most directly relates to the reason the drug was prescribed in the first place. Long-term opioid use can make the pain it was meant to treat worse, and the effect is often missed because it develops slowly.
Hormonal effects include reduced testosterone in men, menstrual disruption in women, and persistent fatigue in both — frequently misattributed to ageing, stress, or the underlying pain condition. Cognitive effects such as reduced concentration, memory difficulty, and emotional flatness often develop slowly enough to be missed by the patient and by those around them, but are commonly reported after a successful taper.
NHS guidance specifically warns against combining long-term opioids with alcohol, sleeping pills, or additional sedatives. The combination depresses breathing in ways that even moderate doses alone would not, and is responsible for a significant share of accidental opioid-related deaths. The NHS Hertfordshire and West Essex “Painkillers Don’t Exist” campaign reflects the clinical reality behind these risks: opioids reduce chronic pain by around 30% at best, and many patients gain no meaningful long-term benefit at all.
Getting Help for Painkiller Addiction
Effective treatment for painkiller dependency addresses the pain and the dependency together, not one before the other. In line with NICE and Opioids Aware guidance, this means a gradual taper with medical supervision, non-pharmaceutical pain management introduced alongside, and the underlying reasons the pain has been difficult to manage – which might include anxiety, depression, trauma, or sleep disruption – addressed as part of the same treatment.
Many patients have already tried the GP-led route and found it didn’t hold. Primary care tapers are paced for what ten-minute appointments can accommodate, with reduction plans that look achievable on paper but become unsustainable when pain returns and support is weeks away. The taper fails, the patient concludes they cannot stop and the dependency continues by default.
Residential treatment that understands pain-led dependency addresses both the pace problem and the support problem together. The taper happens at a speed adjusted to how the body is responding rather than to what the diary allows. Medically supervised detox manages the withdrawal phase. Alongside this, therapeutic work addresses the pain management skills that should have been taught alongside the original prescription but usually weren’t — CBT for pain, movement-based approaches, and attention to sleep and mental health. Where chronic pain exists alongside a co-occurring mental health condition, which is common, both are treated as part of the same clinical picture.
NHS guidance is clear that sudden cessation of long-term opioids can produce severe withdrawal symptoms and is not recommended. Anyone considering coming off long-term painkillers should speak to a doctor or treatment provider before reducing the dose. For the specifics of particular opioid painkillers, the opioids page covers the class-level picture, and the tramadol addiction page handles one of the most common UK prescription routes into dependency.
Getting Support
When the relationship with painkillers has become something other than straightforward pain management — and coming off them feels impossible to do alone — residential treatment that addresses the pain and the dependency together can offer the structure that makes stopping possible.
Read more about drug rehab at Abbington House, or get in touch for a confidential conversation.