Ticagrelor and Cariprazine: 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
Ticagrelor
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.
Here's the deal with Brilinta (ticagrelor) and Vraylar (cariprazine). Your body uses an enzyme called CYP3A4 to both build and break down the active parts of Vraylar. When a medicine changes how fast that enzyme works, it can shift how much active Vraylar is in your body, either up or down. Because this pairing hasn't been well studied, the exact effect isn't certain, which is why it gets flagged.
The good news is this is very manageable. Please don't stop or change either medicine on your own. Just let your pharmacist or doctor know you take both so they can keep an eye on how you're doing and adjust things if needed.
Mechanism: Cariprazine and its active metabolites (desmethyl- and didesmethyl-cariprazine) are CYP3A4 substrates; CYP3A4 mediates both their formation and elimination. The concern is altered CYP3A4-mediated metabolism affecting cariprazine exposure.
- Direction/magnitude: Net effect on cariprazine AUC/Cmax is unclear and not formally evaluated; because CYP3A4 governs both activation and clearance, the outcome is unpredictable.
- Evidence: Theoretical; onset unspecified.
- Severity: Major per label; coadministration with CYP3A4 inducers is not recommended.
- Management: Monitor for changes in efficacy and adverse effects; dose may need individualization, or consider an alternative antiplatelet if clinically appropriate.
What happens
Effects on the cariprazine exposure has not been evaluated and the net effect is unclear
Interaction Deep Dive
It is advised against giving cariprazine (which is a substrate of CYP3A4) together with a CYP3A4 inducer. The generation as well as the clearance of cariprazine's active metabolites depends on CYP3A4. How CYP3A4 inducers influence 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
What your care team may do:
- Keep taking both medicines exactly as prescribed unless your prescriber tells you otherwise.
- Watch you more closely for either reduced benefit from Vraylar or new side effects, since the net effect isn't fully predictable.
- Individualize and adjust your dose if needed, or consider a different medicine option.
What you can do: Make sure both your pharmacist and prescriber know you take Brilinta and Vraylar together. Report any new or worsening symptoms (like mood changes, restlessness, muscle stiffness, or unusual tiredness) so your team can respond.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Ticagrelor and Cariprazine together?
This combination is flagged because ticagrelor may alter how your body processes cariprazine, and the exact effect is uncertain. Keep taking both as prescribed and tell your pharmacist or doctor so they can monitor you and adjust if needed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Ticagrelor and Cariprazine 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 Ticagrelor and Cariprazine interaction managed?
What your care team may do: Keep taking both medicines exactly as prescribed unless your prescriber tells you otherwise. Watch you more closely for either reduced benefit from Vraylar or new side effects, since the net effect isn't fully predictable. Individualize and adjust your dose if needed, or consider a different medicine option. What you can do: Make sure both your pharmacist and prescriber… 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.
Questions for your pharmacist
- Does my dose of Ticagrelor or Cariprazine 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 Ticagrelor
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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