Amitriptyline and Naratriptan: 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
Amitriptyline
Naratriptan
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.
Amitriptyline (Elavil) and naratriptan both raise levels of a brain chemical called serotonin. When you take them together, that serotonin can build up too much, and in rare cases this leads to a reaction called serotonin syndrome.
Signs to watch for include a fast heartbeat, sweating, shakiness or muscle twitching, fever, restlessness, or confusion. This is uncommon, and the concern here is mostly based on how these drugs work rather than lots of reported cases. Many people use a triptan for migraines alongside amitriptyline safely. Your care team can manage this by keeping an eye on you, so let your pharmacist or doctor know you take both.
Mechanism: additive serotonergic effect. Amitriptyline inhibits serotonin (and norepinephrine) reuptake; naratriptan is a 5-HT1 agonist. Combined use raises the theoretical risk of serotonin syndrome. Neither is a prodrug relevant to this interaction; this is a pharmacodynamic, not pharmacokinetic, interaction.
- Direction: increased serotonergic tone (additive)
- Severity: major; evidence: theoretical; onset: unspecified
- Monitor: neuromuscular (hyperreflexia, clonus, tremor, rigidity), autonomic (tachycardia, hyperthermia, diaphoresis, mydriasis, diarrhea), mental status (agitation, delirium)
- Management: use with caution; if coadministered, monitor for serotonin syndrome. If it develops, discontinue offending agents and give supportive care.
What happens
Increased risk of serotonin syndrome (hypertension, hyperthermia, myoclonus, mental status changes)
Interaction Deep Dive
Amitriptyline, which acts as a serotonin reuptake inhibitor, and naratriptan both have an impact on serotonergic neurotransmitter systems. Because their combined use can produce additive serotonergic effects and may raise the likelihood of serotonin syndrome, caution is advised when they are taken together32. When amitriptyline and naratriptan are administered concurrently, it may be appropriate to watch for the signs and symptoms of serotonin syndrome throughout treatment. Such symptoms encompass neuromuscular abnormalities (such as hyperreflexia, tremor, muscle rigidity, clonus, peripheral hypertonicity, and shivering), autonomic hyperactivity (such as tachycardia, mydriasis, diaphoresis, the presence of bowel sounds, and diarrhea), and alterations in mental status (such as agitation and delirium). Serotonin syndrome has the potential to be life-threatening. Should it occur, the responsible agents should be stopped and supportive care along with any other necessary therapy should be provided 1.
Why it happens (mechanism)
Additive serotonergic effect
How to manage this interaction
If you have been prescribed both, keep taking them as directed unless your prescriber tells you otherwise. Do not stop either drug on your own.
- Talk with your pharmacist or doctor so they know you take both and can decide whether extra monitoring is needed.
- Watch for warning signs: fast heartbeat, high fever, heavy sweating, muscle twitching or stiffness, tremor, agitation, or confusion.
- Seek urgent care if several of these appear together, as serotonin syndrome can be serious.
Your care team can manage this by monitoring you more closely and, if needed, individualizing your therapy.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Amitriptyline and Naratriptan together?
Amitriptyline and naratriptan both boost serotonin, so together they carry a rare but real risk of serotonin syndrome; keep taking both as prescribed, tell your care team, and get urgent help for fever, fast heartbeat, muscle twitching, or confusion. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Amitriptyline and Naratriptan 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 Amitriptyline and Naratriptan interaction managed?
If you have been prescribed both, keep taking them as directed unless your prescriber tells you otherwise. Do not stop either drug on your own. Talk with your pharmacist or doctor so they know you take both and can decide whether extra monitoring is needed. Watch for warning signs: fast heartbeat, high fever, heavy sweating, muscle twitching or stiffness, tremor, agitation, or confusion. Seek urge… 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 Amitriptyline or Naratriptan 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 (3)
- Boyer EW & Shannon M: The serotonin syndrome. N Eng J Med 2005; 352(11):1112-1120. PubMed
- Product Information: amitriptyline HCl oral tablet, amitriptyline HCl oral tablet. RemedyRepack Inc. (per DailyMed), Indiana, PA, 2010. DailyMed
- Product Information: AMERGE(R) oral tablets, naratriptan HCl oral tablets. GlaxoSmithKline (per FDA), Research Triangle Park, NC, 2012.
Keep reading about Amitriptyline
Keep reading about Naratriptan
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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