A doctor writes a script for Xanax or Valium to help you sleep, or to take the edge off the panic that’s been building for months. It works. The nights get easier, the days feel manageable, and what was meant to be a short course quietly stretches into a year. Then you try to stop, and your body has something to say about it. This is one of the most common stories we hear from people who arrive at Freeman House, and it almost never starts with anything that looks like addiction.
Benzodiazepines (often shortened to “benzos”) are among the most widely prescribed medicines in South Africa for anxiety and insomnia. They can be genuinely helpful in the short term. The trouble is that they don’t leave the body quickly, dependence can build without you noticing, and coming off them is one of the few drug withdrawals that can be physically dangerous if it’s done badly. Understanding how they behave inside you makes the path through recovery a lot safer.
What benzodiazepines actually do in the brain
Benzodiazepines are sedatives. Common ones include alprazolam (Xanax), diazepam (Valium), lorazepam (Ativan), and clonazepam (Rivotril). They work by boosting the effect of a brain chemical called GABA, which is the body’s natural “slow down” signal. More GABA activity means less nervous tension, slower racing thoughts, and easier sleep. That’s why they calm anxiety and quieten an overactive mind so effectively.
The catch is that the brain notices the extra help and adjusts. Over weeks of regular use, it starts producing less of its own calming signal and leans on the medicine instead. This is physical dependence, and it’s a normal biological response, not a sign of weakness or poor willpower. It’s also why the same dose stops working as well over time, a process called tolerance, which can push people towards higher doses to get the relief they had at the start.
Because benzodiazepines are central nervous system depressants, they slow breathing as well as thought. The risk climbs sharply when they’re combined with other depressants. The US National Institute on Drug Abuse notes that taking benzodiazepines together with opioids or alcohol greatly increases the danger of a life-threatening overdose, since both slow breathing at the same time (NIDA on benzodiazepines and opioids). Anyone using these medicines alongside a drink in the evening, or alongside painkillers, is taking on more risk than they may realise.
How long do benzodiazepines stay in your system?
There’s no single answer, because benzodiazepines differ enormously in how long they last. The key measurement is the “half-life,” meaning the time it takes your body to clear half a dose. Short-acting benzos like alprazolam clear in a matter of hours, while long-acting ones like diazepam can hang around for days, and they break down into active by-products that keep working long after the original dose is gone.
Several things change the timeline for any one person:
- The specific drug. Short half-life versus long half-life makes a big difference to how quickly levels drop.
- How long and how much you’ve used. Benzodiazepines dissolve into fat tissue, so with regular use they can build up and then release slowly back into the bloodstream over time.
- Your liver function and metabolism. The liver does most of the work of clearing these drugs, so age, liver health, and genetics all play a part.
- Overall health and other medicines. Other medications can speed up or slow down how fast benzos are processed.
For most people, a single dose is cleared within a few days, but heavy or long-term use can leave traces detectable for longer. The practical point for recovery is this: because the drug leaves slowly, withdrawal can be drawn out, and symptoms sometimes appear days after the last dose rather than hours. That delay catches people off guard when they try to stop on their own.
Why stopping suddenly can be dangerous
This is the part that matters most, so we’ll say it plainly. Benzodiazepine withdrawal is not like riding out a hangover. Stopping abruptly after sustained use can trigger seizures, and in serious cases delirium, both of which can be life-threatening. This is the one piece of information we’d want every reader to take away.
The NHS is direct about it: diazepam and similar medicines should usually be used only for short periods, longer use can lead to dependence, and the dose should be reduced gradually under a doctor’s supervision rather than stopped all at once (NHS guidance on diazepam). A peer-reviewed review of benzodiazepine withdrawal makes the same point in clinical terms: abruptly stopping after even one to six months of regular use can cause life-threatening seizures, which is exactly why the dose needs to be tapered down slowly (review on benzodiazepine withdrawal and dependence).
Withdrawal symptoms sit on a wide spectrum. Milder ones include:
- Rebound anxiety, often worse than before
- Insomnia and broken sleep
- Headaches, muscle pain, and tremors
- Nausea, sweating, and a racing heart
- Irritability, mood swings, and trouble concentrating
More severe withdrawal can bring on confusion, hallucinations, seizures, and delirium. This is why “going cold turkey” at home is the wrong approach with benzodiazepines, even though it’s well-meant. The safe route is a structured reduction managed by medical staff who can watch for complications and adjust the plan as your body adapts.
How a supervised benzodiazepine detox works
A medically managed detox is built around one idea: bring the brain back to balance slowly enough that it can keep up. Rather than removing the drug all at once, doctors gradually lower the dose, sometimes switching a short-acting benzo to a longer-acting one first, so that levels fall in a smoother, gentler curve. The pace is set by how you respond, not by a fixed calendar.
Throughout the process, medical staff monitor for warning signs and manage symptoms as they come up. Other medicines may be used to ease specific symptoms or reduce the risk of seizures. There are currently no medicines approved specifically to reverse benzodiazepine dependence, so the combination of a careful taper and proper monitoring is what keeps the process safe. You can read more about what this stage involves in our overview of drug and alcohol detox.
Detox is the first step, not the whole treatment. Clearing the drug from your body doesn’t address the anxiety, insomnia, or distress that the medicine was masking in the first place. That’s where the rest of a rehab programme comes in.
What recovery looks like beyond detox
Once the physical dependence is being managed, the focus shifts to the reasons the medicine took hold. For a lot of people, benzodiazepine use is tangled up with an underlying anxiety disorder, trauma, or a sleep problem that never properly resolved. Treating only the dependence, without treating what fed it, tends to leave the door open to relapse.
Therapy does the heavier lifting here. Cognitive behavioural therapy (CBT) helps you recognise and reshape the thought patterns that fuel anxiety, and it has solid evidence behind it for both anxiety and sleep. Group therapy and peer support add something therapy alone can’t: the relief of sitting with people who understand exactly what coming off these medicines feels like. Where a mental health condition sits alongside the dependence, treating both together matters, which is the whole point of dual diagnosis treatment.
Part of recovery is also learning to manage anxiety and sleep without reaching for a pill. Approaches like CBT for insomnia, breathing and mindfulness practice, regular exercise, and steady sleep routines won’t work overnight, but they build real, lasting skills that don’t carry the risk of dependence. None of this replaces medical advice about your own situation, and any change to prescribed medication should always go through your doctor.
Staying well after treatment
Benzodiazepine recovery has a longer tail than many people expect. Some experience what’s known as protracted withdrawal, where milder symptoms like anxiety, low mood, or poor sleep linger and come in waves for weeks or months as the brain slowly rebuilds its own calming chemistry. Knowing this in advance helps, because those waves can feel like failure when they’re actually a normal part of healing.
This is why ongoing support after the residential stage matters so much. Continued therapy, support groups, and a plan for handling cravings and stress all reduce the chance of going back to old patterns. Our approach to aftercare is built around exactly this period, when the structure of rehab falls away and real life resumes.
Frequently Asked Questions
Are benzodiazepines addictive even if my doctor prescribed them?
Yes. Dependence can develop with regular use as prescribed, not only with misuse. The brain adapts to the medicine over time regardless of how you got it, which is why guidelines recommend short courses and careful review. If you’ve been taking a benzodiazepine for months, it’s worth an honest conversation with your doctor. You may also find our piece on when anti-anxiety pills become a problem helpful.
How do I know if I’ve become dependent?
Common signs include needing a higher dose for the same effect, feeling anxious or unwell when a dose is late, struggling to stop despite wanting to, and organising your day around the medicine. If any of these sound familiar, it’s a reason to seek advice rather than to panic. Our article on spotting the signs of Xanax addiction goes into more detail on the warning signs.
Can I just stop taking them on my own?
No, and this is the important one. Stopping benzodiazepines suddenly after regular use can cause seizures and other serious complications. Always reduce under medical supervision, whether that’s through your doctor or a treatment centre, so the taper can be paced safely and any symptoms managed as they arise.
How long does benzodiazepine withdrawal last?
It varies with the drug, the dose, how long you used it, and your own body. Acute withdrawal often runs for a few weeks, but some people experience milder, lingering symptoms for months. A gradual, supervised taper is designed to keep this as manageable as possible rather than forcing it all at once.
Does Freeman House treat prescription medicine dependence?
Yes. Alongside other substances, we treat prescription drug dependence within a holistic inpatient programme that includes medically assisted detox, individual and group therapy, and aftercare planning. The aim throughout is to treat dependence as the health condition it is, with care rather than judgement.
You don’t have to manage this alone
If benzodiazepines have stopped being something you take and started being something you can’t stop, that’s not a moral failing, it’s a treatable medical condition, and it’s a very common one. The safest first step is to talk to someone who can help you taper without putting your health at risk.
Freeman House Recovery is a private drug and alcohol rehab in Meerhof, Hartbeespoort, set in the quiet of the Magaliesberg. Our team can talk you through what supervised detox and treatment would look like for your situation, with no pressure and complete confidentiality. Call us on +27 12 1111 739 or email info@freemanhouserecovery.com whenever you’re ready to talk.
Freeman House Recovery is registered with the Department of Health and the Department of Social Development under the Prevention of and Treatment for Substance Abuse Act 70 of 2008.
