Drug interactions
Benzhydrocodone / acetaminophen + Clonazepam
Severity: Major
Benzhydrocodone / acetaminophen and Clonazepam: 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
Combining a benzodiazepine with an opioid causes additive central nervous system and respiratory depression. This can result in profound sedation, respiratory failure, coma and death.
What this interaction means in plain words
Benzhydrocodone / acetaminophen and Clonazepam 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 and respiratory depression via GABA-A potentiation and opioid receptor agonism.
What to do
Reserve concurrent use for patients without adequate alternatives, using the lowest doses and shortest duration. Monitor for sedation and respiratory depression and counsel patients and caregivers.
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 Clonazepam
- Calcium / magnesium / potassium / sodium oxybates + Clonazepam Contraindicated
- Clonazepam + Sodium oxybate Contraindicated
- Alfentanil + Clonazepam Major
- Alprazolam + Clonazepam Major
- Amobarbital + Clonazepam Major
- Belladonna and opium + Clonazepam Major
Frequently asked questions
Can I take Benzhydrocodone / acetaminophen with Clonazepam?
MediHelp rates the interaction as major. Benzhydrocodone / acetaminophen and Clonazepam 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. Combining a benzodiazepine with an opioid causes additive central nervous system and respiratory depression. This can result in profound sedation, respiratory failure, coma and death.
How serious is the interaction between Benzhydrocodone / acetaminophen and Clonazepam?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reserve concurrent use for patients without adequate alternatives, using the lowest doses and shortest duration. Monitor for sedation and respiratory depression and counsel patients and caregivers.
What other medicines interact with Clonazepam?
MediHelp also lists interactions of Clonazepam with, for example, Calcium / magnesium / potassium / sodium oxybates, Sodium oxybate, Alfentanil. The full list is on the Clonazepam page.
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