AdverseEvent.ai
This page presents data from the FDA Adverse Event Reporting System (FAERS) and the FDA-approved drug label. A report submitted to FAERS does not prove a drug caused the reported event. Always consult a healthcare provider about medications.

Gablofen (baclofen)

gamma-aminobutyric acid-ergic agonist
Last updated: October 14, 2026
Preview tracking

Gablofen is the brand name for baclofen, a gamma-aminobutyric acid-ergic agonist. According to the FDA-approved label, GABLOFEN is indicated for use in the management of severe spasticity in adult and pediatric patients age 4 years and above. Patients should first respond to a screening dose of intrathecal baclofen prior to consideration for long term infusion via an implantable pump. FAERS contains 85,594 submissions naming this drug from 2003 through 2026; the top three reactions cited are fatigue, pain, and drug ineffective.

Most-Reported Reactions

Counts of the reactions most often cited in FAERS submissions that named Gablofen. Inclusion here does not establish causation - submitters describe what was observed, not what was confirmed. One submission can list several reactions, so the totals exceed the report count.

FATIGUE 6,275 (7.3%) PAIN 5,750 (6.7%) DRUG INEFFECTIVE 5,604 (6.5%) FALL 5,500 (6.4%) NAUSEA 4,712 (5.5%) HEADACHE 4,459 (5.2%) GAIT DISTURBANCE 4,150 (4.8%) OFF LABEL USE 3,827 (4.5%) DIZZINESS 3,627 (4.2%) URINARY TRACT INFECTION 3,537 (4.1%) ASTHENIA 3,460 (4.0%) MULTIPLE SCLEROSIS RELAPSE 3,415 (4.0%) MUSCLE SPASMS 3,364 (3.9%) DIARRHOEA 3,143 (3.7%) VOMITING 2,898 (3.4%)

Patient Demographics

Patient sex and age across the FAERS submissions that named Gablofen. Percentages here are computed only from submissions where these fields were filled in - many leave them blank.

By Sex

Female Male Unknown

By Age Group

0-17 18-44 45-64 65+

Severity Outcomes

Severity flags recorded across the 85,594 FAERS submissions that named Gablofen. Each bar shows the count of those reports carrying that flag. A single case can carry more than one (a hospitalization that became life-threatening, for example), so these bars are independent rates - they don't sum to 100%. Inclusion of a case under any flag does not establish that the drug caused the outcome.

DEATH 6,458 (7.5%) HOSPITALIZATION 28,070 (32.8%) LIFE-THREATENING 2,788 (3.3%) DISABLING 2,149 (2.5%)

Submissions Per Quarter

Quarterly count of FAERS submissions that named Gablofen. Ups and downs on this chart can track prescribing volume, news cycles, or shifts in how reports get filed, rather than the drug becoming safer or more dangerous.

2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

From the FDA-Approved Label

Excerpts from the official FDA-approved prescribing information for Gablofen. This is the authoritative source on indications, warnings, and known adverse reactions.

Indications

1 INDICATIONS AND USAGE GABLOFEN is indicated for use in the management of severe spasticity in adult and pediatric patients age 4 years and above. Patients should first respond to a screening dose of intrathecal baclofen prior to consideration for long term infusion via an implantable pump. For spasticity of spinal cord origin, chronic infusion of GABLOFEN via an implantable pump should be reserved for patients unresponsive to oral baclofen therapy, or those who experience intolerable CNS side effects at effective doses. Patients with spasticity due to traumatic brain injury should wait at least one year after the injury before consideration of long term intrathecal baclofen therapy. GABLOFEN is intended for use by the intrathecal route in single bolus test doses (via spinal catheter or lumbar puncture) and, for chronic use, only with the Medtronic SynchroMed ® Programmable Pump or other pumps labeled for intrathecal administration of GABLOFEN [see Clinical Studies (14)] . Prior to implantation of a device for chronic intrathecal infusion of GABLOFEN, patients must show a response to GABLOFEN in a screening trial [see Dosage and Administration (2.2)] . (continues in label)

Adverse Reactions (from label)

6 ADVERSE REACTIONS 6.1 Spasticity of Spinal Cord Origin Most Common Adverse Reactions in Patients with Spasticity of Spinal Origin In pre- and post-marketing clinical trials, the most common adverse reactions associated with use of intrathecal baclofen which were not seen at an equivalent incidence among placebo-treated patients were: somnolence, dizziness, nausea, hypotension, headache, convulsions and hypotonia. Adverse Reactions Associated with Discontinuation of Treatment 8/474 patients with spasticity of spinal cord origin receiving long term infusion of intrathecal baclofen in pre- and post-marketing clinical studies in the U.S. discontinued treatment due to adverse reactions. These include: pump pocket infections (3), meningitis (2), wound dehiscence (1), gynecological fibroids (1) and pump overpressurization (1) with unknown, if any, sequela. Eleven patients who developed coma secondary to overdose had their treatment temporarily suspended, but all were subsequently re-started and were not, therefore, considered to be true discontinuations. Fatalities - [see Warnings and Precautions ( 5.6 )] . (continues in label)

FDA label effective date: 2026-05-07

Disclaimer

AdverseEvent.ai is not affiliated with the FDA. Adverse-event counts come from the FDA Adverse Event Reporting System (FAERS). Drug labels come from the FDA drug label dataset. A report submitted to FAERS does not prove a drug caused the reported event — always consult a healthcare provider about medications. This site is for informational purposes only and is not medical advice.