Cariprazine and Relugolix: 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
Cariprazine
Relugolix
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.
Cariprazine (Vraylar) is broken down in your body by a liver enzyme called CYP3A4. That same enzyme also creates the active forms of the drug that do the real work. Relugolix (Orgovyx) can nudge this enzyme to work differently, so the amount of active cariprazine in your body could shift. Because this exact combination has not been formally studied, we cannot say for sure whether cariprazine ends up too strong or too weak.
The good news is this is very manageable. Please don't stop either medicine on your own. Just let your doctor or pharmacist know you take both so they can watch how you're doing and adjust if needed.
Mechanism: Cariprazine is a CYP3A4 substrate; CYP3A4 governs both formation and elimination of its active metabolites (desmethyl- and didesmethyl-cariprazine). Relugolix is characterized as a CYP3A4 inducer.
- Direction: Net effect on cariprazine exposure is unclear because induction affects both activation and clearance of the active moieties.
- Magnitude/onset: Not quantified; onset unspecified.
- Evidence: Theoretical; combination not formally evaluated.
- Management: Coadministration is not recommended per labeling. If used, monitor clinical response and adverse effects closely; dose may need individualization by the care team.
What happens
Effects on the cariprazine exposure has not been evaluated and the net effect is unclear
Interaction Deep Dive
Using cariprazine (which is metabolized by CYP3A4) together with a CYP3A4 inducer is not advised. Both the generation and clearance of cariprazine's active metabolites depend on CYP3A4. Because the impact of CYP3A4 inducers on cariprazine exposure has not been studied, the overall outcome remains uncertain1.
Why it happens (mechanism)
Induction of CYP3A4-mediated metabolism of cariprazine
How to manage this interaction
Both of these can be taken together safely when your care team is aware and keeping an eye on things. Here is what typically happens:
- The manufacturer says this pairing is generally not recommended, so your prescriber may consider whether an alternative fits your situation.
- If you stay on both, your team may monitor you more closely for changes in how well the cariprazine is working or for new side effects, and your dose may be adjusted and individualized.
What to do: Keep taking both exactly as prescribed, and let your pharmacist or doctor know you take them together. Report any new symptoms or a return of the symptoms cariprazine treats.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Cariprazine and Relugolix together?
Relugolix may change how much active cariprazine your body has, and the net direction is not known, so tell your doctor or pharmacist you take both and let them monitor and adjust as needed. Do not stop either drug on your own. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Cariprazine and Relugolix 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 Relugolix interaction managed?
Both of these can be taken together safely when your care team is aware and keeping an eye on things. Here is what typically happens: The manufacturer says this pairing is generally not recommended, so your prescriber may consider whether an alternative fits your situation. If you stay on both, your team may monitor you more closely for changes in how well the cariprazine is working or for new sid… 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 Cariprazine or Relugolix 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 Cariprazine
Keep reading about Relugolix
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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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