The short answer
Most medical detoxes last 3–10 days. The exact length depends on the substance, how much and how long you’ve been using, whether more than one substance is involved, and what other medical or psychiatric conditions are in the picture.
Detox ends when the acute withdrawal window closes — the physical crisis is over and you’re medically stable enough to start behavioral treatment. Post-acute symptoms (sleep, mood, cravings) can persist for weeks and are managed in outpatient PHP or IOP.
Timeline by substance
These are typical ranges. Individual variation is significant, and severity depends heavily on how long you’ve been using and how much.
Typical acute detox windows.
| Onset | Peak | Acute window | |
|---|---|---|---|
| Alcohol | 6–12 hrs | 24–72 hrs | 3–7 days |
| Benzos (short-acting) | 1–2 days | 1–2 wks | 2–4 wks taper |
| Benzos (long-acting) | 2–7 days | 2–4 wks | Weeks–months taper |
| Heroin / oxycodone | 8–24 hrs | 48–72 hrs | 5–10 days |
| Fentanyl | 6–12 hrs | 48–72 hrs | 5–10 days |
| Methadone | 1–3 days | 3–6 days | 10–20 days |
| Cocaine / meth | Hours | Days 2–7 | Psychological, 1–2 wks |
Why length matters less than what happens next
Detox is the easy part. It’s the days after — when the acute misery is gone but the reasons someone was using haven’t changed — where relapse happens. Detox alone has one of the highest relapse rates of any medical intervention because it doesn’t treat addiction. It only manages withdrawal.
The pattern that works: medical detox first (if needed) → immediately into outpatient PHP for daily structure → step down to IOP → weekly outpatient support. Skipping the second step is the most common reason detox fails.
How Real Deal coordinates it
Real Deal doesn’t operate an inpatient detox unit — we’re outpatient. But we coordinate detox with trusted partner facilities in DFW and San Antonio, and we hold your outpatient spot so the transition is same-day. That eliminates the gap where most people relapse.
If you’re not sure whether you need detox at all, call and we’ll talk it through. Some people can start straight in PHP without a formal detox. Others need 5 days of medical stabilization first. It’s a clinical call.
Real questions the intake team hears on the phone.
For alcohol, benzos, or heavy daily opioid use — no. Home detox from alcohol or benzos can cause fatal seizures. Home opioid detox isn’t medically dangerous but is almost always unsuccessful because the misery drives relapse. Stimulant “detox” you can technically do at home, but you’ll do far better with clinical support from day one.
No. Detox clears the body over 3–10 days. Rehab (PHP, IOP, outpatient) is the behavioral treatment that actually addresses the addiction. You almost always need both.
Most PPO plans cover medically necessary detox. We verify your specific coverage in about 15 minutes — call 469-747-1201.
Skip them. Ultra-rapid detox under anesthesia carries real medical risk without better outcomes. Over-the-counter “detox” supplements do nothing for actual withdrawal.
It’s uncomfortable — flu-like for opioids, high anxiety for benzos/alcohol, deep depression for stimulants — but medically managed detox brings most people through it far better than they expect. Medications (Suboxone for opioids, benzos for alcohol taper, comfort meds across the board) make a real difference.
Most Real Deal clients transition into PHP the same day they’re discharged from detox. We coordinate the hand-off in advance.
Sources & further reading
Medically reviewed by our clinical team
Last reviewed September 2026. This article is educational and is not medical advice. In an emergency call 911 or the 988 Suicide & Crisis Lifeline.
