How Long Does Drug and Alcohol Detox Take?
Medically reviewed for accuracy byDr. Courtney Scott, MD· July 2026
One of the first questions people ask about detox is simply, 'how long will this take?' It's a fair question, and the honest answer is: it depends. The substance involved, how long and how heavily it was used, and your overall health all shape the timeline.
That said, there are realistic ranges for each substance. Here's what to expect.
The Short Answer
Most medically supervised detox programs last between 3 and 10 days. Some substances resolve faster, while others, especially benzodiazepines, require a slower, longer taper. Your care team gives you a specific timeline after an assessment, so you're never left guessing.
Alcohol Detox Timeline
Alcohol withdrawal symptoms usually begin within 6 to 12 hours of the last drink, peak around 24 to 72 hours, and ease over roughly 5 to 7 days. Because severe alcohol withdrawal can include seizures and delirium tremens (DTs), medical supervision is essential.
Opioid Detox Timeline (Heroin, Fentanyl, Painkillers)
Short-acting opioids like heroin typically produce withdrawal within 6 to 12 hours, peaking at 1 to 3 days and easing over about a week. Fentanyl can be less predictable and sometimes longer. Opioid withdrawal is rarely life-threatening but is intensely uncomfortable, and medication-assisted treatment makes it far more manageable.
Benzodiazepine Detox Timeline
Benzodiazepines are the outlier. Because stopping suddenly can cause seizures, they're tapered gradually, which means detox often takes longer, sometimes several weeks, depending on the drug and dose. This is the safest approach and should always be medically supervised.
Stimulant Detox Timeline (Cocaine, Meth)
Stimulant withdrawal is more psychological than physical. The initial 'crash', marked by fatigue, heavy sleep, and low mood, lasts a few days, while depression and cravings can linger for a couple of weeks or more. Monitoring matters here because of the risk of severe depression during this phase.
What Comes After Detox
Remember that detox is the first step, not the finish line. Post-acute withdrawal symptoms, mood swings, sleep changes, and cravings, can come and go for weeks, which is why moving from detox into ongoing therapy is so important. At Path to Recovery Detox in Pasadena, we manage your detox and set up the next stage of care. Call us any time for a free, confidential assessment.
How Path to Recovery Can Help
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Expiration Date: 2/28/2027
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This page was medically reviewed for accuracy by:
- Courtney Scott, MD (NPI #1699906750)
- Dezatte Burnett, LCSW (NPI #1821240342)
- Richard Cole, LMFT, PhD (NPI #1023412244)
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