Baclofen Withdrawal: Why Stopping Suddenly Is Dangerous

Baclofen withdrawal timeline at a glance

Phase	When	What you may feel	Severity	Red flags
Oral baclofen: early withdrawal	Within hours to days of a sudden stop or big dose cut (the label gives no exact timing)	Return or worsening of muscle spasticity; Anxiety, agitation; Trouble sleeping	Severe	Hallucinations, confusion or delirium; A seizure, confusion, or seeing or hearing things that aren’t there: call 911
Oral baclofen: severe withdrawal	Can follow abrupt stopping	Hallucinations; Seizures; Confusion	Can be life-threatening	A seizure, confusion, or seeing or hearing things that aren’t there: call 911; Hallucinations, confusion or delirium
Pump (intrathecal) early warning signs	Hours to days after the infusion is interrupted	Return of baseline spasticity; Itching; Low blood pressure; Pins and needles (paresthesia)	Severe	Any of these with a pump: call your pump team or go to the ER now
Pump (intrathecal) advanced withdrawal	If the interruption isn’t treated quickly	High fever; Altered mental status; Exaggerated rebound spasticity and muscle rigidity	Can be life-threatening	High fever, severe muscle stiffness or confusion; Muscle breakdown (rhabdomyolysis) and organ failure

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Symptoms, phase by phase

Baclofen comes as tablets or liquid and as an implanted pump that delivers it into the spinal fluid (intrathecal baclofen). The baclofen tablet label says hallucinations and seizures have occurred on abrupt withdrawal. The Lioresal Intrathecal label says early symptoms of withdrawal may include return of baseline spasticity, itching, low blood pressure and paresthesias, and that abrupt withdrawal, whatever the cause, has resulted in high fever, altered mental status, exaggerated rebound spasticity and muscle rigidity that in rare cases progressed to rhabdomyolysis, multiple organ-system failure and death. The labels don’t give an hour-by-hour timeline, so the phases below describe what happens rather than exact times.

Oral baclofen: early withdrawal: Within hours to days of a sudden stop or big dose cut (the label gives no exact timing)

• Return or worsening of muscle spasticity
• Anxiety, agitation
• Trouble sleeping

Oral baclofen: severe withdrawal: Can follow abrupt stopping

• Hallucinations
• Seizures
• Confusion

Pump (intrathecal) early warning signs: Hours to days after the infusion is interrupted

• Return of baseline spasticity
• Itching
• Low blood pressure
• Pins and needles (paresthesia)

Pump (intrathecal) advanced withdrawal: If the interruption isn’t treated quickly

• High fever
• Altered mental status
• Exaggerated rebound spasticity and muscle rigidity

What makes withdrawal longer or shorter

• Pump vs tablets. Pump interruptions are the highest-risk situation. The label lists catheter problems, a low reservoir and end of battery life as common causes.
• Dose and how long you’ve taken it. Higher doses and longer use may mean more dependence.
• Speed of stopping. Abrupt stops carry the most risk; the label says to withdraw slowly.
• Other health conditions. The intrathecal label flags spinal cord injury at T-6 or above, communication difficulties and past withdrawal as higher-risk.

When to see a doctor or get help now

• Before stopping or reducing baclofen in any form.
• Pump users: keep refill appointments and know your pump alarm. Call your pump team or go to the ER for returning spasticity, itching, low blood pressure or tingling.
• Call 911 for a seizure, hallucinations, severe confusion, a high fever or trouble breathing.
• If you run out of tablets, contact your prescriber or pharmacy the same day.

Not sure where to start? Call SAMHSA’s free, confidential helpline at 1-800-662-4357, 24/7. See Get Help.

Tapering

The baclofen label says patients should be withdrawn slowly, and the NHS says a doctor will reduce the dose gradually over several weeks or months. We don’t publish dose-by-dose schedules. Your prescriber should set your plan, and adjust it if symptoms appear.

Tips for getting through it

• Never let a prescription run out; set refill reminders
• Pump users: carry your pump information card and know your nearest specialist center
• Tell family the warning signs so they can act fast
• Avoid alcohol and other sedatives

Frequently asked questions

Is baclofen withdrawal dangerous?

Yes, it can be. The FDA label reports hallucinations and seizures after abrupt withdrawal of oral baclofen, and pump interruptions have led to death in rare cases.

How long does it take to come off baclofen?

The NHS says your doctor will reduce it gradually over several weeks or months. The right pace depends on your dose and condition.

What are signs my baclofen pump is failing?

The intrathecal label lists early signs such as return of your usual spasticity, itching, low blood pressure and tingling. Treat these as urgent.

Can I skip a few doses?

Don’t. The label says hallucinations and seizures have occurred on abrupt withdrawal, and a doctor should reduce the dose slowly. Talk to your prescriber if side effects are why you want to stop.

Next steps

• Combine timelinesAdd other things you are stopping and see them on one chart
• Talk to othersAsk questions on our community forum (peer support, not medical advice)
• Read nextSoma (Carisoprodol) Withdrawal Timeline
• Get helpFree, confidential helplines and when to see a doctor

Related timelines

• Soma (Carisoprodol) Withdrawal Timeline
• Gabapentin Withdrawal Timeline
• Benzo Withdrawal Timeline: Short- vs Long-Acting
• Flexeril (Cyclobenzaprine): Is There Withdrawal?

Sources

1. FDA label: Baclofen tablets (DailyMed)
2. FDA label: Lioresal Intrathecal (baclofen injection) (DailyMed)
3. NHS: Baclofen
4. SAMHSA National Helpline

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Last reviewed: October 25, 2026. Researched and written by Withdrawal Timelines from the cited sources. This article has not yet been reviewed by a medical professional. See How We Review and our Medical Disclaimer. This is general information, not medical advice.