Cariprazine and Kratom: 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
Kratom
No brand names on recordCariprazine
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 what's going on. Your body uses an enzyme called CYP3A to break down cariprazine (Vraylar). Kratom appears to slow that enzyme down. When the enzyme works slower, cariprazine can build up in your body more than expected, which may lead to stronger side effects like drowsiness, restlessness, dizziness, or movement problems.
This effect is more likely with higher kratom doses or regular, ongoing use. The good news is that this is very manageable. Keep taking your cariprazine exactly as prescribed, and let your pharmacist or doctor know you use kratom so they can watch how you're doing and adjust your care if needed.
Mechanism: Kratom is a probable CYP3A inhibitor; cariprazine is a CYP3A4 substrate (it is active drug, not a prodrug, and also forms active metabolites via CYP3A4).
Direction/effect: Reduced CYP3A-mediated metabolism increases cariprazine exposure (AUC/Cmax), potentially heightening dose-related adverse effects (akathisia, EPS, sedation, QT considerations).
- Onset: unspecified; effect likely greater with higher-dose or chronic kratom use.
- Evidence: probable.
- Management: monitor closely for cariprazine toxicity/adverse effects. Cariprazine dose may need individualized adjustment by the prescriber. Advise consistent disclosure of kratom use.
What happens
Increased CYP3A substrate exposure
Interaction Deep Dive
When kratom, which inhibits CYP3A, is taken together with a substrate of CYP3A, the substrate's exposure can rise, particularly with chronic use or larger kratom doses1. Careful monitoring is advised2.
Why it happens (mechanism)
Inhibition of CYP3A-mediated metabolism by kratom
How to manage this interaction
This can be managed. Kratom may raise cariprazine levels, so the focus is on monitoring and, if needed, tailoring your dose.
- Keep taking your cariprazine exactly as prescribed. Do not start, stop, or change either one on your own.
- Tell your pharmacist and prescriber that you use kratom, including how much and how often, since higher or ongoing use matters more.
- Watch for increased side effects such as drowsiness, restlessness, dizziness, or unusual movements, and report them.
- Your care team may monitor you more closely and adjust and individualize your cariprazine dose as needed.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) An open-label crossover study in healthy adults (N=12) assessed the intake of a single low dose of kratom tea (2 g) along with oral midazolam (a CYP3A probe substrate; 2.5 mg) and oral dextromethorphan (a CYP2D6 probe substrate; 30 mg). Kratom produced a modest rise in the geometric mean AUC of midazolam (1.39; 90% CI, 1.23 to 1.57) and its Cmax (1.5; 90% CI, 1.32 to 1.7); dextromethorphan AUC and Cmax showed no change. The half life of midazolam was not significantly changed when kratom was taken concurrently, which points to inhibition of first-pass metabolism, mainly CYP3A within the intestine. The participants (median age, 30 years) had prior exposure to kratom and agreed to refrain from concomitant medications and botanical or other natural products (including kratom) for the duration of the study 1.
Common questions
Can I take Cariprazine and Kratom together?
Kratom can slow the breakdown of cariprazine and raise its levels, which may increase side effects; keep taking both as prescribed and tell your care team you use kratom so they can monitor you and adjust the dose if needed. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Cariprazine and Kratom interaction?
It is rated moderate. Can be significant — usually manageable with 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 Kratom interaction managed?
This can be managed. Kratom may raise cariprazine levels, so the focus is on monitoring and, if needed, tailoring your dose. Keep taking your cariprazine exactly as prescribed. Do not start, stop, or change either one on your own. Tell your pharmacist and prescriber that you use kratom, including how much and how often, since higher or ongoing use matters more. Watch for increased side effects suc… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "probable". Good supporting evidence, though not definitively proven.
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 Kratom 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 anything you'd monitor while I'm on both?
References (2)
- Tanna RS, Nguyen JT, Hadi DL, et al: Clinical assessment of the drug interaction potential of the psychotropic natural product kratom. Clin Pharmacol Ther 2023; 113(6):1315-1325. PubMed
- Dhoble LR, Gour A, McCurdy CR, et al: Evaluating the drug interactions in kratom usage: clinical application. Expert Opin Drug Metab Toxicol 2025; 21(8):949-959. PubMed
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