Baclofen's Effects on Sleep and Respiratory Function

Critical Safety Concerns: Sleep-Disordered Breathing

The British Journal of Pharmacology guidelines recommend avoiding baclofen in patients with obstructive sleep apnea (OSA) due to its potential to provoke upper airway collapse during sleep, worsen OSA, and induce central apneas or hypoventilation by depressing respiratory drive 1
Baclofen has complex and potentially harmful effects on sleep, causing upper airway collapse and worsening obstructive sleep apnea, and can induce central sleep apnea even at low doses, yet may improve sleep consolidation in patients without sleep-disordered breathing 1

The American College of Physicians recommends avoiding baclofen in dementia patients with muscle contraction due to significant cognitive and safety concerns, as baclofen can worsen obstructive sleep apnea by promoting upper airway collapse 2
Abrupt discontinuation of baclofen can cause life-threatening symptoms, including hallucinations, anxiety, agitation, delirium, fever, tremors, tachycardia, and seizures, and gradual tapering is essential when discontinuing the medication 2

Caution is advised when using baclofen in patients with compromised respiratory function, such as those with asthma, COPD, or sleep apnea, due to the potential for additive effects with concomitant CNS depressants and alcohol use 3, 4
The American Academy of Sleep Medicine recommends avoiding the combination of baclofen with other sedatives in patients with sleep restriction, and educating patients about the potential risks of baclofen, including common drowsiness, potential withdrawal symptoms, and the need to avoid alcohol and other CNS depressants 3, 4