Nalbuphine and Cyclobenzaprine Interaction
Drug interaction information between Nalbuphine and Cyclobenzaprine.
Nalbuphine and Cyclobenzaprine have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Nalbuphine and Cyclobenzaprine. Major interactions are generally avoided, moderate ones may need monitoring or a dose adjustment, and minor ones are usually low-risk. This page shows the documented mechanism and guidance. Label-documented interactions are not a complete safety review, so always confirm your own medications with a pharmacist or doctor. Educational information, not medical advice.
How They Interact
These medications both affect the serotonin system in your brain. Using them together increases the risk of having too much serotonin in your body at once.
What To Do
Tell your doctor immediately if you experience symptoms like shivering, sweating, or confusion while taking these drugs.
FDA Label Information
Serotonergic Drugs The concomitant use of opioids with other drugs that affect the serotonergic neurotransmitter system, such as selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs), triptans, 5-HT3 receptor antagonists, drugs that effect the serotonin neurotransmitter system (e.g., mirtazapine, trazodone, tramadol), certain muscle relaxants (i.e., cyclobenzaprine, metaxalone), and monoamine oxidase (MAO) inhibitors (those intended to treat psychiatric disorders and also others, such as linezolid and...
Nalbuphine Also Interacts With
- Oxycodone moderate
- Trazodone minor
- Mirtazapine minor
- Linezolid minor
- Phenelzine minor
Cyclobenzaprine Also Interacts With
- Clozapine moderate
- Tapentadol moderate
- Tranylcypromine moderate
- Acetaminophen/Oxycodone minor
- Buprenorphine minor
Frequently Asked Questions
Can I take Nalbuphine and Cyclobenzaprine together?
This is a minor interaction. Tell your doctor immediately if you experience symptoms like shivering, sweating, or confusion while taking these drugs.
How serious is the interaction between Nalbuphine and Cyclobenzaprine?
This interaction is classified as "minor" severity by the FDA. Minor interactions are unlikely to cause significant problems but should still be mentioned to your healthcare provider.
Why do Nalbuphine and Cyclobenzaprine interact?
These medications both affect the serotonin system in your brain. Using them together increases the risk of having too much serotonin in your body at once.
Understanding the Nalbuphine and Cyclobenzaprine Interaction
FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Nalbuphine belongs to the Opioid Agonist-Antagonist class and Cyclobenzaprine belongs to the Muscle Relaxant class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: These medications both affect the serotonin system in your brain. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.
Context around a specific patient determines real-world impact. Nalbuphine has 19 total documented interactions on file in this dataset, and Cyclobenzaprine has 17. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: Tell your doctor immediately if you experience symptoms like shivering, sweating, or confusion while taking these drugs. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.
An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Nalbuphine or Cyclobenzaprine based on a web page, speak with your prescriber or pharmacist before making any change.
Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. Always consult your healthcare provider about drug interactions.
Read our methodology - how this data is sourced, computed, and verified.