Withdrawal Timelines

General reference for withdrawal timelines by substance class. These are typical ranges — individual experiences vary significantly based on duration of use, dosage, metabolism, and co-occurring conditions.

Some withdrawals are medical emergencies.Alcohol, benzodiazepine, and GHB withdrawal can cause fatal seizures. If you or someone you know is dependent on these substances, do not stop abruptly — seek medical supervision for a safe taper.

Alcohollife-threatening

medical supervision recommended

Alcohol withdrawal can be fatal. Seizures and delirium tremens (DTs) are medical emergencies. Anyone with a history of heavy daily drinking should not stop abruptly without medical supervision.

typical timeline

Early withdrawal6–12 hours after last drink

–Anxiety, irritability, tremor

–Nausea, vomiting, sweating

–Elevated heart rate and blood pressure

–Insomnia

Peak risk period24–72 hours

–Seizures (most common at 24–48 hours)

–Hallucinations (visual, auditory, or tactile)

–Delirium tremens: confusion, agitation, fever, cardiovascular instability

–DTs carry 5–15% mortality if untreated

Subacute phase3–7 days

–Gradual improvement of acute symptoms

–Persistent anxiety and sleep disruption

–Mood instability

Post-acute (PAWS)Weeks to months

–Anxiety, depression, emotional flatness

–Sleep disturbances

–Cognitive difficulties (memory, concentration)

–Cravings

seek emergency help if

–Seizures or convulsions

–Confusion or disorientation (possible DTs)

–Fever above 38.3°C / 101°F

–Severe tremor that prevents daily function

–Hallucinations

Medical detox with benzodiazepines is the standard of care for moderate-to-severe alcohol withdrawal. The CIWA-Ar scale is used to assess severity. If you drink daily, consult a doctor before stopping.

Benzodiazepineslife-threatening

medical supervision recommended

Benzodiazepine withdrawal can cause fatal seizures. Physical dependence can develop in as few as 2–4 weeks of daily use. A slow, medically supervised taper is essential — never stop abruptly.

typical timeline

Early withdrawal1–4 days (short-acting) or 2–7 days (long-acting)

–Rebound anxiety and insomnia (often worse than pre-treatment)

–Tremor, sweating, irritability

–Difficulty concentrating

Acute withdrawal5—28 days

–Peak anxiety, panic attacks

–Seizure risk (especially if stopped abruptly from high doses)

–Perceptual disturbances (light/sound sensitivity, depersonalization)

–Muscle pain, headaches, GI distress

Protracted withdrawalMonths to years (some individuals)

–Persistent anxiety, depression

–Cognitive impairment

–Sensory hypersensitivity

–Waves and windows pattern (symptoms come and go)

seek emergency help if

–Seizures or convulsions

–Psychosis or severe confusion

–Suicidal ideation

–Inability to eat or drink

The Ashton Manual is the most referenced tapering guide. Standard practice is to cross-taper to a long-acting benzodiazepine (diazepam) and reduce by 5–10% every 1–2 weeks. Some people require 12+ months to taper safely.

Opioidssevere

medical supervision recommended

Opioid withdrawal is intensely uncomfortable but rarely fatal in otherwise healthy adults. However, dehydration from vomiting/diarrhea can be dangerous, and the relapse risk immediately after withdrawal is the highest-mortality period due to lost tolerance.

typical timeline

Early withdrawal8–24 hours (short-acting) or 36–72 hours (long-acting/methadone)

–Anxiety, restlessness, yawning

–Muscle aches, tearing eyes, runny nose

–Sweating, goosebumps

–Insomnia

Peak symptoms36–72 hours (short-acting) or 4–7 days (long-acting)

–Severe nausea, vomiting, diarrhea

–Abdominal cramps

–Dilated pupils, rapid heartbeat

–Intense dysphoria and cravings

–Restless legs, inability to stay still

Resolution5–10 days (short-acting) or 2–3 weeks (long-acting)

–Gradual physical improvement

–Persistent fatigue and malaise

–GI normalization

Post-acute (PAWS)Weeks to months

–Insomnia, low energy

–Dysphoria, anhedonia

–Cravings (can persist for months)

–Sensitivity to pain (hyperalgesia)

seek emergency help if

–Severe dehydration (unable to keep fluids down)

–Confusion or altered consciousness

–Suicidal thoughts

–Using any opioid after tolerance loss (highest overdose risk period)

Medication-assisted treatment (MAT) with buprenorphine or methadone is the gold standard and dramatically reduces mortality. Naltrexone is an option after full withdrawal. The highest risk of fatal overdose is in the days after stopping, when tolerance has dropped but cravings remain.

Stimulants (cocaine, amphetamines)moderate

Stimulant withdrawal is not physically dangerous but can cause severe depression and fatigue. The primary risk is psychological — intense cravings and suicidal ideation during the “crash” phase.

typical timeline

CrashHours to 3 days after last use

–Extreme fatigue, hypersomnia (sleeping 12–18+ hours)

–Increased appetite

–Depression, irritability

–Vivid, unpleasant dreams

Withdrawal1–2 weeks

–Persistent low mood, anhedonia

–Difficulty concentrating

–Cravings, especially triggered by environmental cues

–Psychomotor slowing

ExtinctionWeeks to months

–Intermittent cravings (decreasing over time)

–Gradual mood normalization

–Cue-triggered cravings can persist for months

seek emergency help if

–Suicidal ideation or self-harm

–Psychotic symptoms (paranoia, hallucinations) that persist after stopping

–Inability to function (eat, hydrate, maintain hygiene)

There is no FDA-approved medication for stimulant withdrawal, but supportive care, sleep hygiene, nutrition, and mental health support are critical. The crash phase can look alarming (sleeping for days) but is generally self-resolving.

MDMA / Entactogensmild

MDMA “comedown” results from serotonin depletion. It is not withdrawal in the clinical sense (physical dependence is rare) but can cause significant mood disruption for days to weeks. See the MDMA Supplementation Protocol for mitigation strategies.

typical timeline

Comedown1–3 days after use

–Low mood, irritability, emotional sensitivity

–Fatigue, poor sleep quality

–Difficulty concentrating

–Jaw soreness, muscle tension

Recovery3–7 days

–Gradual mood improvement

–Residual cognitive fog

–Possible anxiety or depressive episodes

Full restoration1–4 weeks (varies with frequency of use)

–Return to baseline mood

–Frequent users may take longer

–Chronic heavy use can cause persistent serotonergic dysfunction

seek emergency help if

–Persistent depression lasting more than 2 weeks

–Suicidal thoughts

–Serotonin syndrome symptoms (if combining with serotonergic medications)

The 3-month rule between MDMA uses exists to allow serotonin system recovery. More frequent use extends and worsens the comedown. 5-HTP supplementation (starting the day AFTER use, never same-day) can help replenish serotonin.

Cannabismild

Cannabis withdrawal is recognized in DSM-5 and affects roughly 47% of regular users. Symptoms are physically mild but psychologically disruptive, particularly insomnia and irritability.

typical timeline

Onset1–3 days after stopping

–Irritability, anger, anxiety

–Insomnia, vivid dreams (REM rebound)

–Decreased appetite, nausea

–Restlessness

Peak4–14 days

–Peak insomnia and mood symptoms

–Night sweats

–Cravings

–Difficulty concentrating

Resolution2–4 weeks (most symptoms)

–Gradual normalization of sleep

–Appetite returns

–Mood stabilization

–Vivid dreams may persist for weeks

seek emergency help if

–Severe anxiety or panic attacks

–Depression with suicidal ideation

–Weight loss from inability to eat

Sleep disruption is typically the most persistent symptom. Melatonin and sleep hygiene practices help. Exercise significantly improves mood symptoms during cannabis withdrawal.

GHB / GBLlife-threatening

medical supervision recommended

GHB withdrawal is one of the most dangerous substance withdrawals, comparable to alcohol. Physical dependence develops rapidly with around-the-clock dosing. Medical supervision is essential.

typical timeline

Early withdrawal1–6 hours after last dose

–Anxiety, tremor, insomnia

–Tachycardia, hypertension

–Nausea, sweating

Acute withdrawal1–5 days

–Severe insomnia (may go days without sleep)

–Psychosis, hallucinations, delirium

–Seizures

–Autonomic instability (dangerous heart rate/blood pressure swings)

Subacute1–2 weeks

–Gradual improvement

–Persistent anxiety and sleep difficulty

–Cognitive impairment

seek emergency help if

–Seizures

–Delirium or psychosis

–Inability to sleep for 48+ hours

–Heart rate above 120 or irregular

GHB withdrawal often requires ICU-level care. Benzodiazepines are the primary treatment, sometimes with barbiturates or pharmaceutical GHB (sodium oxybate) for taper. The very short half-life means dependence develops fast when dosing every 1–4 hours.

The most dangerous period is after withdrawal, not during it. Tolerance drops rapidly during abstinence. If you relapse to your previous dose after even a few days of withdrawal, overdose risk is dramatically elevated — especially for opioids.

These timelines are general references, not medical advice. Individual withdrawal experiences vary significantly. If you are considering stopping or reducing a substance you are physically dependent on, consult a healthcare provider.

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