Sertraline and Hydroxyzine: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 2, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Hydroxyzine
No brand names on recordSertraline
No brand names on record
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.
Both hydroxyzine (often used for itching, allergies, or anxiety) and sertraline (used for depression and anxiety) can each affect your heart's electrical timing in a small way. This is called QT prolongation. When you take them together, that effect can add up, which in rare cases could lead to an abnormal heartbeat.
The good news is this concern is mostly theoretical, meaning it is based on how the drugs work rather than lots of real-world reports. Your care team knows how to watch for this. Please don't stop either medicine on your own. Just let your pharmacist or doctor know you take both so they can make sure it's the right combination for you.
Effect: Additive QT interval prolongation with increased theoretical risk of ventricular arrhythmias (including torsades de pointes) when hydroxyzine and sertraline are combined.
Mechanism: Both agents independently prolong cardiac repolarization; this is a pharmacodynamic (additive), not pharmacokinetic, interaction. Neither is a prodrug, so activation is not a factor.
- Direction/magnitude: Additive QT effect; magnitude not quantified.
- Onset: Unspecified.
- Evidence: Theoretical; severity graded major.
- Management: Avoid coadministration where feasible. If combined, correct electrolytes (K+, Mg2+), review other QT-prolonging drugs, and consider ECG monitoring in higher-risk patients.
What happens
An increased risk of QT interval prolongation
Interaction Deep Dive
Do not administer sertraline together with this drug, since concurrent use may heighten the likelihood of QT prolongation and/or ventricular arrhythmias1.
Why it happens (mechanism)
Additive QT interval prolongation
How to manage this interaction
Because both drugs can lengthen the heart's QT interval, guidance is to avoid using them together when possible. That decision belongs to your care team.
- Keep taking both exactly as prescribed unless your doctor or pharmacist tells you otherwise.
- Tell them about all your medicines, including other drugs that affect heart rhythm.
- Ask whether an alternative to one of these medicines might suit you better.
- Your team may choose to monitor you more closely, such as with an ECG or by checking your potassium and magnesium levels.
- Seek care promptly if you feel fainting, palpitations, or a racing or irregular heartbeat.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Sertraline and Hydroxyzine together?
Combining hydroxyzine and sertraline can add up their effects on your heart rhythm, so this pairing is generally avoided when possible. Keep taking both as prescribed and ask your pharmacist or doctor whether an alternative or extra monitoring is right for you. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Sertraline and Hydroxyzine 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 Sertraline and Hydroxyzine interaction managed?
Because both drugs can lengthen the heart's QT interval, guidance is to avoid using them together when possible. That decision belongs to your care team. Keep taking both exactly as prescribed unless your doctor or pharmacist tells you otherwise. Tell them about all your medicines, including other drugs that affect heart rhythm. Ask whether an alternative to one of these medicines might suit you b… 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 About Combining Hydroxyzine And Buspirone
- Can You Take Turmeric With Hydroxyzine?
- Can You Take Claritin With Vistaril (Hydroxyzine)?
- Switching Between Generic Sertraline Brands: What to Know
- Is Ashwagandha Safe With Bupropion, Sertraline And Azelastine?
- Converting Doses Of Lexapro (Escitalopram) To Zoloft (Sertraline)
Questions for your pharmacist
- Does my dose of Sertraline or Hydroxyzine 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: ZOLOFT oral tablets, oral solution, sertraline hydrochloride oral tablets, oral solution. Viatris Specialty LLC (per FDA), Morgantown, WV, 2023. DailyMed
Keep reading about Hydroxyzine
Keep reading about Sertraline
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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