Opioid withdrawal follows a relatively predictable timeline that varies with the specific opioid’s half-life. Understanding the opioid withdrawal timeline helps patients and clinicians plan appropriately. Acute withdrawal is uncomfortable but typically not life-threatening; post-acute withdrawal can persist for weeks to months. This guide covers expected timelines.
Acute withdrawal (Days 1-7)
Onset depends on opioid half-life:
- Short-acting (oxycodone, hydrocodone): 8-12 hours after last dose
- Long-acting (oxycontin, MS Contin): 12-24 hours
- Methadone: 24-48 hours
- Buprenorphine: variable, sometimes delayed
Peak severity in days 2-3 typically; resolution of acute symptoms by day 5-10.
Symptoms by phase
Early (12-24 hours): Anxiety, restlessness, lacrimation, rhinorrhea, yawning, sweating, muscle aches.
Peak (Days 2-3): All early symptoms plus diarrhea, nausea, vomiting, abdominal cramping, dilated pupils, insomnia, tachycardia, hypertension, severe agitation.
Resolution (Days 5-10): Symptoms gradually decrease. Mood and sleep often persist after physical symptoms resolve.
Post-acute withdrawal syndrome (PAWS)
After acute withdrawal, post-acute symptoms can persist:
- Fatigue
- Mood symptoms (depression, anxiety)
- Sleep disturbance
- Anhedonia (inability to feel pleasure)
- Cognitive issues
- Cravings
Duration: weeks to months. Gradual improvement with time.
The COWS scale
The Clinical Opiate Withdrawal Scale (COWS) quantifies withdrawal severity:
- 5-12: mild
- 13-24: moderate
- 25-36: moderately severe
- 37+: severe
The scale guides treatment decisions, including buprenorphine induction timing.
Adjunctive treatment
Symptomatic treatments:
- Clonidine: autonomic symptoms
- Loperamide: diarrhea
- Anti-emetics: nausea
- NSAIDs: muscle aches
- Buprenorphine or methadone: comprehensive treatment
Frequently Asked Questions
Is opioid withdrawal life-threatening?
Generally not for adults. Pregnant women, babies in NAS, and severely ill patients face higher risk.
How long does opioid withdrawal last?
Acute 5-10 days; PAWS weeks to months.
What helps withdrawal go faster?
Time is the primary factor. Adjunctive medications reduce symptoms but don’t speed timeline.
Can withdrawal cause cardiovascular issues?
Hypertension, tachycardia. Generally manageable; severely ill patients need monitoring.
What about babies of opioid-using mothers?
Neonatal abstinence syndrome (NAS) requires specialized care.
The bottom line on opioid withdrawal timeline
Acute opioid withdrawal: 5-10 days with peak in days 2-3. PAWS extends weeks to months. Adjunctive medications help symptoms. Medication-assisted treatment (buprenorphine, methadone) is often more appropriate than withdrawal management for OUD.