Medical detox — clinicians more often call it "withdrawal management" — is the 3- to 10-day medical process by which the body adjusts to being without the substance. Done safely, it's the bridge into actual treatment. Done carelessly, it can be medically dangerous and almost always fails. Here's the practical guide.
What detox is — and what it isn't
Detox is a medical process. It is not "treatment" in the rehabilitation sense. The role of a detox program is to keep you safe through the physical adjustment, manage symptoms with appropriate medications, and assess you for the next stage of treatment. People who detox without any plan for what comes next have very high relapse rates — not because detox failed, but because nothing followed it.
For some substances — alcohol, opioids, benzodiazepines, and sometimes others — withdrawal can be medically dangerous and requires medical supervision. Severe alcohol withdrawal can cause seizures and delirium tremens, both of which can be fatal. Opioid withdrawal is rarely fatal but is intensely uncomfortable and produces high relapse risk if unmedicated. Benzodiazepine withdrawal can cause seizures and prolonged neurological symptoms.
For other substances — cannabis, cocaine, methamphetamine — withdrawal is uncomfortable but rarely medically dangerous. Medical support is still useful for symptom management and starting the assessment process, but the setting can be more flexible.
The main detox settings in Australia
Hospital detox
For severe alcohol, opioid, or benzodiazepine withdrawal — particularly with a history of seizures, prior delirium tremens, or significant medical comorbidity — detox is done in an acute hospital ward. You're under the care of an addiction medicine specialist or general physician with addiction expertise, with nursing every shift, regular medical review, and access to medications including benzodiazepines (for alcohol withdrawal), buprenorphine or methadone (for opioids), and symptomatic medications.
Hospital detox is the highest-acuity setting and is appropriate for people with significant medical risk. Free for Medicare-eligible Australians.
Dedicated detox unit
Many cities have stand-alone detox facilities — sometimes hospital-attached, sometimes free-standing — with 5–25 beds. Medical care is similar to a hospital but the environment is calmer and more recovery-oriented, and the staff are specialists in withdrawal. This is the most common setting for moderately-severe withdrawal in Australia.
Public detox units are free. Wait times for non-urgent admissions are 1–4 weeks. NGO and private detox units have shorter wait times but cost.
Community / home detox
For mild-to-moderate withdrawal, in stable home circumstances, "home detox" or "ambulatory detox" is increasingly common. Your GP and a community AOD nurse provide medications and check in daily for the first week. It's lower-cost (often free through public services), lower-disruption, and surprisingly safe for the right person — but requires a stable home, no children present in some programs, and someone to be with you for the first 72 hours.
Private inpatient with integrated detox
Most private residential rehabs offer integrated detox onsite, supervised by a visiting doctor and 24-hour nursing. The medical care is typically equivalent to a public detox unit, with the additional benefit of moving directly into the rehab program without a transfer.
What the first week feels like, by substance
Alcohol
Day 1 — anxiety, sweating, racing pulse, tremor in the hands. Sleep is broken. Day 2–3 — peak symptoms, often the worst day. Some people hallucinate or have seizures if not properly medicated; this is why supervised detox matters. Day 4–5 — symptoms ease. By day 7 most people feel physically much better, though sleep can stay disturbed for weeks. Withdrawal medications (typically diazepam or similar benzodiazepines on a tapering schedule) substantially reduce both the severity of symptoms and the risk of complications.
Opioids
Day 1 — runny nose, sweating, restlessness, intense cravings. Day 2–3 — peak: severe muscle aches, vomiting, diarrhoea, cramps, restless legs, no sleep. Day 4–6 — symptoms taper. Cravings persist longer than the physical symptoms, often for weeks. Buprenorphine or methadone substantially shortens the acute phase and is increasingly the standard of care for opioid withdrawal.
Methamphetamine
Day 1–3 — extreme exhaustion, sleeping 16+ hours per day, low mood, anhedonia (nothing feels good). Day 4–7 — energy slowly returns, but mood often crashes. Cravings can be intense and unpredictable. The physical risk is low; the psychological challenge is the dominant one. Medications can support sleep and mood but the core work is psychological.
Cannabis
Day 1–3 — irritability, insomnia, low appetite, vivid dreams. Day 4–7 — mood instability and cravings, with sleep usually the slowest thing to recover. Withdrawal is real but rarely medically significant. Outpatient or home detox is almost always appropriate.
Benzodiazepines
The most variable and often the longest withdrawal — anxiety, insomnia, sensory disturbances, sometimes seizures. Almost always managed with a slow medical taper (weeks to months) rather than abrupt cessation. Stopping benzodiazepines suddenly after long-term daily use can be life-threatening; tapering must be done with a doctor who knows your history.
Cocaine
Day 1–3 — fatigue, low mood, increased appetite, sleep disturbance, intense cravings. Day 4–7 — gradual improvement. Physical withdrawal is mild but cravings are intense. Outpatient or short inpatient is appropriate.
How to access detox
Public
- Call your state alcohol and drug line — they can refer directly into public detox.
- See your GP — they can refer to public detox or arrange home detox.
- Present to a hospital emergency department in crisis — for acute presentations.
- Self-refer to a community AOD service — for outpatient assessment.
Private
- Call private detox or rehab facilities directly — admission within days is typical.
- Get an itemised cost estimate before committing.
- Confirm what's included — medications, doctor reviews, accommodation, meals.
- Check if your private health insurance covers any of the cost.
Things to know before detox
- Detox is not a quick fix. It's the medical bridge into treatment. Without a follow-on plan, relapse rates after detox alone are very high.
- Take the medications. Withdrawal medications are tools to keep you safe and functional, not "another drug to be addicted to." Refusing them to "do it the hard way" is one of the most common reasons attempts fail.
- Day 4–7 is when many people walk out. Acute symptoms have eased, the boredom is intense, and rationalising thinking peaks ("I feel fine, I don't need this"). This is the moment good detox programs spend the most therapeutic energy on.
- Sleep is slow to come back. 3–4 weeks of disturbed sleep after detox is normal.
- Mood often gets worse before better. The first 1–2 weeks substance-free can feel emotionally flatter than active use, because the brain's reward system hasn't recalibrated. Normal and temporary.
- Don't make major decisions in the first 14 days. The clarity is real; so is the emotional volatility.
- Have a plan for what's next. Detox without a treatment plan is a setup for relapse.
When detox isn't enough
Detox is the medical phase. The actual recovery work — building new patterns, treating co-occurring conditions, addressing the things that drove use in the first place — happens after. Most people need at least one of: residential rehab (28+ days), structured outpatient programs (8–16 weeks), ongoing counselling (6–12+ months), peer support (years), and medication-assisted treatment where appropriate.
The single most consistent finding in addiction outcome research: people who pair detox with structured follow-on treatment have dramatically better outcomes than those who detox and then "see how it goes." Plan the next stage before you start detox, not after.
For a personal walk-through of which detox setting fits your situation and how to plan the next stage, request a callback below — free and confidential.