Macimorelin and Sertraline: 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
Sertraline
No brand names on recordMacimorelin
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.
Let me explain this one simply. Both sertraline (an antidepressant) and macimorelin (a single-use test medicine that checks how well your body makes growth hormone) can each affect your heart's electrical rhythm in a small way. When they are used together, that effect can add up and may slightly raise the chance of an abnormal heartbeat.
The good news is that macimorelin is usually given just once for a test, not every day, so your care team can plan around this. This concern is based on theory, not a lot of real-world reports. Please don't change anything on your own. Just tell the team ordering the test that you take sertraline, and they will decide the safest approach.
Effect: Additive risk of QT interval prolongation and potential ventricular arrhythmias (including torsades de pointes) with coadministration of sertraline and macimorelin.
Mechanism: Both agents independently prolong the QT interval; the interaction is pharmacodynamic (additive) rather than pharmacokinetic. Neither is a prodrug relevant here.
- Direction: Increased QT effect.
- Severity: Major. Onset: Unspecified. Evidence: Theoretical.
- Management: Manufacturer guidance advises avoiding coadministration. Macimorelin is a single-dose diagnostic; consider withholding sertraline before testing per prescriber judgment, and obtain baseline ECG/electrolytes if the combination is unavoidable.
What happens
An increased risk of QT interval prolongation
Interaction Deep Dive
Sertraline should not be given together with this drug, since doing so can elevate the likelihood of QT prolongation and/or ventricular arrhythmias1.
Why it happens (mechanism)
Additive QT interval prolongation
How to manage this interaction
Here is how a care team usually handles this:
- The label recommends avoiding using these two together. Because macimorelin is a one-time growth-hormone test, this is often managed by timing.
- Your prescriber may decide whether sertraline should be paused around the test date, and may check an ECG and electrolytes if needed.
What you should do: keep taking your sertraline as prescribed, and do not stop it on your own. Before any macimorelin test, tell the ordering clinician and your pharmacist that you take sertraline so they can choose the safest plan.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Macimorelin and Sertraline together?
Sertraline and macimorelin can both prolong the QT interval, so guidance is to avoid using them together; tell whoever orders the macimorelin test that you take sertraline so they can time it safely. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Macimorelin and Sertraline 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 Macimorelin and Sertraline interaction managed?
Here is how a care team usually handles this: The label recommends avoiding using these two together. Because macimorelin is a one-time growth-hormone test, this is often managed by timing. Your prescriber may decide whether sertraline should be paused around the test date, and may check an ECG and electrolytes if needed. What you should do: keep taking your sertraline as prescribed, and do not st… 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 Macimorelin or Sertraline 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 Sertraline
Keep reading about Macimorelin
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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