Dopamine and Tetrabenazine Interaction
Drug interaction information between Dopamine and Tetrabenazine.
Dopamine and Tetrabenazine have a documented moderate interaction in FDA labeling.
FDA drug labeling documents a moderate-severity interaction between Dopamine and Tetrabenazine. 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
Both drugs affect how dopamine works in the brain. Using them together can cause movement problems or serious nervous system reactions.
What To Do
Your doctor should monitor you closely for movement issues or signs of a serious reaction. They may need to adjust your doses.
FDA Label Information
7.6 Neuroleptic Drugs The risk for Parkinsonism, NMS, and akathisia may be increased by concomitant use of tetrabenazine and dopamine antagonists or antipsychotics (e.g., chlorpromazine, haloperidol, olanzapine, risperidone, thioridazine, ziprasidone) [see Warnings and Precautions ( 5.4 , 5.5 , 5.6 )] .
Dopamine Also Interacts With
- Carbidopa/Levodopa moderate
- Deutetrabenazine moderate
- Digoxin moderate
- Tranylcypromine moderate
- Amitriptyline minor
Tetrabenazine Also Interacts With
- Deutetrabenazine major
- Valbenazine major
- Olanzapine moderate
- Risperidone moderate
- Ziprasidone moderate
Frequently Asked Questions
Can I take Dopamine and Tetrabenazine together?
This is a moderate interaction. Your doctor should monitor you closely for movement issues or signs of a serious reaction. They may need to adjust your doses.
How serious is the interaction between Dopamine and Tetrabenazine?
This interaction is classified as "moderate" severity by the FDA. Moderate interactions may worsen your condition or change how your medications work.
Why do Dopamine and Tetrabenazine interact?
Both drugs affect how dopamine works in the brain. Using them together can cause movement problems or serious nervous system reactions.
Understanding the Dopamine and Tetrabenazine Interaction
FDA-approved prescribing information for these two drugs flags their combination as a moderate-severity interaction. Dopamine belongs to the Inotropic / Vasopressor class and Tetrabenazine belongs to the VMAT2 Inhibitor class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Both drugs affect how dopamine works in the 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. Dopamine has 28 total documented interactions on file in this dataset, and Tetrabenazine has 16. 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: Your doctor should monitor you closely for movement issues or signs of a serious reaction. 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 Dopamine or Tetrabenazine 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.