Case Report: Synergistic central nervous system depression of baclofen and pregabalin: clinical pharmacist-driven case analysis and case review

BackgroundBaclofen, a γ-aminobutyric acid (GABA) derivative, and Pregabalin, a GABA analogue, are widely prescribed for muscle spasm and neuropathic pain. This first-reported case demonstrates synergistic central nervous system (CNS) depression of Baclofen (30 mg/day) and Pregabalin (300 mg/day) in...

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Main Authors: Yitong Xie, Danwei Wu, Peihao Jin, Lu Mao, Jiancun Zhen, Wei Zhang
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-06-01
Series:Frontiers in Pharmacology
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Online Access:https://www.frontiersin.org/articles/10.3389/fphar.2025.1598971/full
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author Yitong Xie
Yitong Xie
Danwei Wu
Peihao Jin
Lu Mao
Jiancun Zhen
Wei Zhang
author_facet Yitong Xie
Yitong Xie
Danwei Wu
Peihao Jin
Lu Mao
Jiancun Zhen
Wei Zhang
author_sort Yitong Xie
collection DOAJ
description BackgroundBaclofen, a γ-aminobutyric acid (GABA) derivative, and Pregabalin, a GABA analogue, are widely prescribed for muscle spasm and neuropathic pain. This first-reported case demonstrates synergistic central nervous system (CNS) depression of Baclofen (30 mg/day) and Pregabalin (300 mg/day) in a patient with mild renal impairment [estimated glomerular filtration rate, (eGFR) = 77.26 mL/min].Case PresentationA 68-year-old female with renal impairment developed progressive CNS depression (somnolence, coma) following combined Baclofen (30 mg/day) and Pregabalin (300 mg/day) therapy after spinal fusion surgery. CNS depression was completely resolved 48 h after drug discontinuation.ConclusionClinicians should exercise heightened caution when combining Baclofen and Pregabalin in renal impairment. Dose adjustments based on creatinine clearance (CLcr) are strongly recommended. Particular attention should be given to initiating therapy with reduced starting doses in patients at elevated risk of CNS depression.
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publishDate 2025-06-01
publisher Frontiers Media S.A.
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spelling doaj-art-d7bb2c8ac77448e8aff144c98b9f52592025-08-20T02:32:27ZengFrontiers Media S.A.Frontiers in Pharmacology1663-98122025-06-011610.3389/fphar.2025.15989711598971Case Report: Synergistic central nervous system depression of baclofen and pregabalin: clinical pharmacist-driven case analysis and case reviewYitong Xie0Yitong Xie1Danwei Wu2Peihao Jin3Lu Mao4Jiancun Zhen5Wei Zhang6School of Pharmaceutical Sciences, Capital Medical University, Beijing, ChinaDepartment of Pharmacy, Beijing Jishuitan Hospital, Capital Medical University, Beijing, ChinaDepartment of Pharmacy, Beijing Jishuitan Hospital, Capital Medical University, Beijing, ChinaDepartment of Spine Surgery, Beijing Jishuitan Hospital, Capital Medical University, Beijing, ChinaDepartment of Pharmacy, Beijing Jishuitan Hospital, Capital Medical University, Beijing, ChinaDepartment of Pharmacy, Beijing Jishuitan Hospital, Capital Medical University, Beijing, ChinaDepartment of Pharmacy, Beijing Jishuitan Hospital, Capital Medical University, Beijing, ChinaBackgroundBaclofen, a γ-aminobutyric acid (GABA) derivative, and Pregabalin, a GABA analogue, are widely prescribed for muscle spasm and neuropathic pain. This first-reported case demonstrates synergistic central nervous system (CNS) depression of Baclofen (30 mg/day) and Pregabalin (300 mg/day) in a patient with mild renal impairment [estimated glomerular filtration rate, (eGFR) = 77.26 mL/min].Case PresentationA 68-year-old female with renal impairment developed progressive CNS depression (somnolence, coma) following combined Baclofen (30 mg/day) and Pregabalin (300 mg/day) therapy after spinal fusion surgery. CNS depression was completely resolved 48 h after drug discontinuation.ConclusionClinicians should exercise heightened caution when combining Baclofen and Pregabalin in renal impairment. Dose adjustments based on creatinine clearance (CLcr) are strongly recommended. Particular attention should be given to initiating therapy with reduced starting doses in patients at elevated risk of CNS depression.https://www.frontiersin.org/articles/10.3389/fphar.2025.1598971/fullbaclofenpregabalindrug-induced CNS depressionrenal impairmentsynergistic toxicity
spellingShingle Yitong Xie
Yitong Xie
Danwei Wu
Peihao Jin
Lu Mao
Jiancun Zhen
Wei Zhang
Case Report: Synergistic central nervous system depression of baclofen and pregabalin: clinical pharmacist-driven case analysis and case review
Frontiers in Pharmacology
baclofen
pregabalin
drug-induced CNS depression
renal impairment
synergistic toxicity
title Case Report: Synergistic central nervous system depression of baclofen and pregabalin: clinical pharmacist-driven case analysis and case review
title_full Case Report: Synergistic central nervous system depression of baclofen and pregabalin: clinical pharmacist-driven case analysis and case review
title_fullStr Case Report: Synergistic central nervous system depression of baclofen and pregabalin: clinical pharmacist-driven case analysis and case review
title_full_unstemmed Case Report: Synergistic central nervous system depression of baclofen and pregabalin: clinical pharmacist-driven case analysis and case review
title_short Case Report: Synergistic central nervous system depression of baclofen and pregabalin: clinical pharmacist-driven case analysis and case review
title_sort case report synergistic central nervous system depression of baclofen and pregabalin clinical pharmacist driven case analysis and case review
topic baclofen
pregabalin
drug-induced CNS depression
renal impairment
synergistic toxicity
url https://www.frontiersin.org/articles/10.3389/fphar.2025.1598971/full
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