Cariprazine and Carbamazepine: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 16, 2026 · Source data updated Jul 16, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Carbamazepine
Cariprazine
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
Carbamazepine (Tegretol) speeds up a liver enzyme called CYP3A4. That same enzyme both creates and clears the active pieces of cariprazine (Vraylar). Because it does both jobs, experts haven't been able to pin down exactly what happens when you take these two together, which is why combining them isn't recommended.
The concern is that your cariprazine might not work as steadily as it should for your mood or thinking symptoms. The good news: this is something your care team can plan for. Please don't stop or change either medicine on your own. Just check in with your pharmacist or doctor so they can pick the safest plan for you.
Mechanism: Carbamazepine is a potent CYP3A4 inducer. Cariprazine is a CYP3A4 substrate, and CYP3A4 mediates both the formation and elimination of its active metabolites (desmethyl- and didesmethyl-cariprazine).
- Direction/magnitude: Net effect on total active moiety exposure is unclear and not formally studied, because induction affects both activation and clearance.
- Evidence: Theoretical; onset unspecified.
- Management: Concomitant use is not recommended per labeling. If unavoidable, monitor closely for loss of efficacy or altered response; the antipsychotic regimen should be individualized by the care team.
What happens
Effects on the cariprazine exposure has not been evaluated and the net effect is unclear
Interaction Deep Dive
The combined use of cariprazine (which is metabolized by CYP3A4) with a CYP3A4 inducer is advised against. Both the generation and clearance of cariprazine's active metabolites depend on CYP3A4. How CYP3A4 inducers affect cariprazine exposure has not been studied, so the overall outcome remains uncertain1.
Why it happens (mechanism)
Induction of CYP3A4-mediated metabolism of cariprazine
How to manage this interaction
The drug labeling advises that this combination is not recommended, mainly because the overall effect on cariprazine is hard to predict.
- Keep taking both as prescribed unless your prescriber tells you otherwise. Do not stop or adjust doses on your own.
- Your care team may watch you more closely for signs your cariprazine is working less well (return of symptoms) or any unusual changes.
- They may consider whether a different medication is a better fit, and can tailor and adjust your dosing.
- Tell your pharmacist or doctor that you take both, and report any change in how you feel.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Cariprazine and Carbamazepine together?
Combining carbamazepine with cariprazine is not recommended because carbamazepine can unpredictably change cariprazine levels, so let your care team monitor you and decide on the best plan. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Cariprazine and Carbamazepine interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Cariprazine and Carbamazepine interaction managed?
The drug labeling advises that this combination is not recommended, mainly because the overall effect on cariprazine is hard to predict. Keep taking both as prescribed unless your prescriber tells you otherwise. Do not stop or adjust doses on your own. Your care team may watch you more closely for signs your cariprazine is working less well (return of symptoms) or any unusual changes. They may con… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Cariprazine or Carbamazepine need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (1)
- Product Information: VRAYLAR(R) oral capsules, cariprazine oral capsules. AbbVie Inc. (per FDA), North Chicago, IL, 2024. DailyMed
Keep reading about Carbamazepine
Keep reading about Cariprazine
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
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