Drug interactions
Benzhydrocodone / acetaminophen + Tizanidine
Severity: Major
Benzhydrocodone / acetaminophen and Tizanidine: 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
Tizanidine is a sedating alpha-2 agonist and adds to opioid-induced CNS depression. The combination can cause profound sedation, respiratory depression and hypotension.
What this interaction means in plain words
Benzhydrocodone / acetaminophen and Tizanidine 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 and hypotension from alpha-2 agonism and mu-opioid agonism.
What to do
Use together only when alternatives are inadequate, with the lowest effective doses. Monitor sedation, respiratory rate and blood pressure.
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 Tizanidine
- Ciprofloxacin + Tizanidine Contraindicated
- Fluvoxamine + Tizanidine Contraindicated
- Pefloxacin + Tizanidine Contraindicated
- Pipemidic acid + Tizanidine Contraindicated
- Brexanolone + Tizanidine Major
- Buprenorphine long-acting + Tizanidine Major
Frequently asked questions
Can I take Benzhydrocodone / acetaminophen with Tizanidine?
MediHelp rates the interaction as major. Benzhydrocodone / acetaminophen and Tizanidine 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. Tizanidine is a sedating alpha-2 agonist and adds to opioid-induced CNS depression. The combination can cause profound sedation, respiratory depression and hypotension.
How serious is the interaction between Benzhydrocodone / acetaminophen and Tizanidine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use together only when alternatives are inadequate, with the lowest effective doses. Monitor sedation, respiratory rate and blood pressure.
What other medicines interact with Tizanidine?
MediHelp also lists interactions of Tizanidine with, for example, Ciprofloxacin, Fluvoxamine, Pefloxacin. The full list is on the Tizanidine page.
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