Drug interactions
Baclofen + Calcium / magnesium / potassium / sodium oxybates
Severity: Major
Baclofen and Calcium / magnesium / potassium / sodium oxybates: major interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Oxybates are potent CNS depressants, and baclofen adds to their effects. Together they can cause profound sedation, respiratory depression, coma and death.
What this interaction means in plain words
Baclofen and Calcium / magnesium / potassium / sodium oxybates can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive CNS depression, as oxybate acts at GABA-B and GHB receptors and baclofen is a GABA-B agonist.
What to do
Avoid the combination where possible, or use the lowest doses for the shortest time. If both are needed, monitor closely for sedation and respiratory depression and reduce doses of either drug if present.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Baclofen
Frequently asked questions
Can I take Baclofen with Calcium / magnesium / potassium / sodium oxybates?
MediHelp rates the interaction as major. Baclofen and Calcium / magnesium / potassium / sodium oxybates can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Oxybates are potent CNS depressants, and baclofen adds to their effects. Together they can cause profound sedation, respiratory depression, coma and death.
How serious is the interaction between Baclofen and Calcium / magnesium / potassium / sodium oxybates?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible, or use the lowest doses for the shortest time. If both are needed, monitor closely for sedation and respiratory depression and reduce doses of either drug if present.
What other medicines interact with Baclofen?
MediHelp also lists interactions of Baclofen with, for example, Alfentanil, Amobarbital, Belladonna and opium. The full list is on the Baclofen page.
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