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Why Sedatives Aren't a Long-Term Solution

Richard Layton

Written by:

Richard Layton

Dr Mateen Durrani

Medically Reviewed by:

Dr Mateen Durrani

Last Updated:

March 27th, 2026

Benzodiazepines and Z-drugs should be prescribed for two to four weeks at most. That’s NICE guidance, backed by the British National Formulary, and it’s been the standard for decades. Yet when researchers looked at UK prescribing data from 2017, they found that 44% of new benzodiazepine prescriptions exceeded that four-week limit. More than one in five exceeded six months. Roughly 1.4 million adults in the UK receive a benzodiazepine prescription each year, and many end up taking them far longer than anyone intended.

The dangers of being dependent on sleeping pills have been evident since the 1980s, when the problems with long-term sedative use first became impossible to ignore. This guide explains why sedatives, useful as they can be in a crisis, need to be taken carefully and for as short a time as possible.

man in depression for Stimulant addiction

How sedatives work

There are two main types of sedatives prescribed for anxiety and insomnia. Benzodiazepines include diazepam (Valium) and temazepam for sleep, and lorazepam (Ativan) and alprazolam for anxiety. Then there are the Z-drugs, including zopiclone and zolpidem, which work similarly to benzos despite being chemically different drugs. Both work on the same brain system, amplifying the effects of a chemical called GABA that slows down activity in the brain.

These slowing effects are why sedatives work so well. If you take one during a panic attack or on a sleepless night, they can calm racing thoughts, steady your heartbeat and pulse, and loosen the awful tension in your body. For genuine crises, this can be a huge relief. But the problem is what happens when you keep taking them.

How sedative tolerance and dependence develop

The very thing that makes sedatives work in the short term causes problems when you keep taking them for weeks and months. Your brain is adaptive, so when you flood it repeatedly with a chemical that enhances GABA, it compensates by dialling down its own GABA activity and becoming less responsive to the drug. This causes tolerance, which develops faster than many people using sedatives could have imagined. It is why the dose that once put you to sleep no longer works as well, and why the anxiety relief that used to last all day now wears off by lunchtime.

At this point, many people find themselves taking the medication not to feel better than normal, but simply to feel normal at all. This is dependence, and it can develop even when you’ve taken the medication exactly as prescribed.

The dangers and traps of sedative withdrawal

This is where sedatives become genuinely dangerous. Unlike many drugs, z-drug and benzodiazepine dependence carry real medical risk if you stop suddenly. Severe seizures can occur, and case reports have documented them after fewer than fifteen days of benzo use at normal doses. 

As well as the seizure risk, there is also the cruel paradox of sedative withdrawal, where symptoms often look exactly like the condition you were treating in the first place. Only far worse. If you stop taking sleeping pills, you are hit with terrible insomnia. Coming off anxiety medication brings crippling anxiety. It’s not hard to see how someone might conclude they genuinely need the drug, when what they’re actually experiencing is their body readjusting to its absence.

This is why people get stuck, as the line between “I have anxiety that needs medication” and “I’m experiencing withdrawal from medication” can be almost impossible to see from the inside.

Long-term effects of sedatives on the brain and body

When researchers pooled results from thirteen studies, they found that long-term sedative users showed problems in every cognitive area tested, including memory, attention, visual tasks, and reasoning. A separate study supported this, finding that 21% of long-term benzodiazepine users had widespread difficulties with thinking and memory.

Some of this improves after stopping, but not all of it and not always. When researchers checked back, they found that while people improved in many areas after withdrawal, they often hadn’t returned to their previous level even six months later.

There is also emotional blunting, with many long-term users describing feeling flattened, as though positive emotions have been dulled along with the negative ones. 

Earlier work suggested that benzos may increase the risk of dementia, but more recent evidence has muddied the water somewhat. A 2024 population study of over 5,000 people found no clear link between sedative use and dementia. However, the same study found that current users showed reduced volume in the hippocampus and amygdala, brain regions involved in memory and emotion. Whether this translates to lasting harm isn’t yet known, though it’s not reassuring.

For older adults, other risks of sedatives are more concrete. They make you unsteady and make falls more likely, which in the elderly can mean hip fractures and hospitalisation.

The dangers of combining sedatives with alcohol or other drugs

Sedatives rarely kill on their own, and even a substantial overdose can result in nothing worse than extended sleep. What makes them especially dangerous is the combination, particularly with alcohol, opioids, or both.

Both benzodiazepines and alcohol slow the part of your brain that keeps you breathing. When you take them together, the effects multiply. Research found that people being treated for opioid addiction who were also prescribed benzodiazepines faced three times the risk of overdose death. 

In England and Wales, benzodiazepines were mentioned in 629 drug poisoning deaths registered in 2024. In Scotland, where polydrug use drives the majority of harm, benzodiazepines were implicated in 56% of all drug deaths that year. 

This is why pharmacists and doctors ask whether you drink, and why the warnings on the packaging aren’t an exaggeration or unnecessary caution. When mixed with a sedative, a glass of wine that would normally leave you slightly relaxed, could potentially be enough to stop you breathing entirely.

Alternatives that actually work

If sedatives aren’t suitable for long-term use, what is? For insomnia, cognitive behavioural therapy for insomnia, known as CBT-I, addresses the thoughts and behaviours that keep insomnia going. It is typically delivered over six to eight sessions, and has been found to work as well as medication in the short term and better in the long term. One ten-year follow-up found that 66% of participants no longer had insomnia, and unlike pills, the skills stay with you.

For anxiety, CBT remains what NICE guidelines recommend first, but it’s not the only thing that helps. Regular exercise has been shown to reduce anxiety symptoms as effectively as medication in some studies. Mindfulness-based approaches work for some people, particularly for those whose anxiety is caused by overthinking. Even simple breathing techniques can lower the tension that makes everything feel harder than it should. UKAT provides all of these alternative treatments as well as CBT as part of our sedative rehab programmes, because we understand different things work for different people. 

Practical changes can help with insomnia, like having regular bedtimes, a bedroom that is dark and only for sleeping, cutting down on caffeine after lunchtime, drinking less alcohol, and not exercising too late. These aren’t revolutionary suggestions, but they can work, and they give many people much-needed relief without the risks of sedatives.

Getting help

If you’ve been taking sedatives for longer than you intended, the most important thing to understand is that you should not stop suddenly. The safest route is a slow reduction with medical monitoring through sleeping pill addiction treatment.

If you’re unsure whether you need help, ask yourself whether you take sedatives because they still work, or because you can’t face what happens when you don’t. If the answer is the latter, or if you just need help answering the question, contact Providence Projects today.

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