The short answer
Review melatonin before adding it to amoxapine, especially if you already feel sleepy. Amoxapine can impair alertness, but exact combination effects have not been measured in the sources reviewed.
What this answer covers
Oral melatonin and amoxapine; prolonged-release melatonin studies with imipramine are indirect.
- Supplement or preparation
- Melatonin
- Medication ingredient
- amoxapine
The medicine can affect alertness
Amoxapine labeling describes drowsiness and warns about hazardous activities when affected. It also cautions about other central nervous system depressants.
The measured melatonin evidence used another drug
Prolonged-release melatonin information reports more tranquility and difficulty with tasks when combined with imipramine, not amoxapine.
Do not assume a drug-level interaction
The imipramine study summary found no clinically significant pharmacokinetic interaction. Neither that result nor its functional effects establish what happens to amoxapine concentrations.
Watch for impaired alertness
Amoxapine can affect alertness and coordination. Avoid driving if affected and contact the prescriber if added sleepiness, confusion or unsteadiness appears after a new product. Severe confusion, fainting or inability to wake needs urgent assessment.
Evidence and practical considerations
Side effects & toxicity
Conditional alertness precaution supported by medication warning and explicitly indirect melatonin evidence.
- Exact scope
- Oral melatonin and amoxapine; prolonged-release melatonin studies with imipramine are indirect. with Exact oral amoxapine tablets. RxNorm IN722, exact oral amoxapine tablets. Active hydroxy metabolites and dopamine-receptor effects do not make it identical to other antidepressants or antipsychotics.
- Medication form and route
- oral
- Timing or duration
- Source-specific single-dose, repeated-dose and observational exposures distinguished.
What remains uncertain
- No direct amoxapine co-use study; other-drug functional effects do not establish amoxapine accumulation or a safe timing interval.
Factors that may matter: preparation and plant part; clinical indication; dose; other medicines; baseline alertness.
Read the supporting source summaries
Source 1: current product label
dailymed.nlm.nih.gov · Source check Sep 10, 2026
Population: People prescribed oral amoxapine.
Label describes a mild sedative component, dopamine-blocking and neuroleptic malignant syndrome concerns, and active metabolites. It does not explicitly name serotonin syndrome or the requested supplements.
How this applies: RxNorm IN722, exact oral amoxapine tablets. Active hydroxy metabolites and dopamine-receptor effects do not make it identical to other antidepressants or antipsychotics.
No universal supplement interval, event rate or preparation equivalence established.
Source 2: official product label
medicines.org.uk · Source check Sep 10, 2026
Population: Participants in original interaction studies summarized by label.
No clinically significant pharmacokinetic interaction; greater tranquility and difficulty performing tasks compared with imipramine alone.
How this applies: Indirect imipramine co-use evidence only; no measured amoxapine interaction in this product-label summary.
Different antidepressant and prolonged-release melatonin; no amoxapine effect size or universal preparation equivalence.
Research assessment: · Open full citations ↗
Review and change history
- Publication status
- Published research summary
- Clinical review
- Not yet recorded
| Date | Update |
|---|---|
| Article prepared | |
| Current exact available claims adjudicated using original captures and explicit identity and comparator limits. | |
| Research summary published |
Article revision: f35e7e2055cce77d
This guide brings together the evidence records used by our interaction checker. Each finding retains its own preparation limits, research date, and source summaries.
Full citations require verification. Reading this answer and the source summaries does not.
Taking other supplements or medications?
Use the checker to explore your other combinations. Ask a pharmacist to review the exact products, amounts and medical conditions in your complete list.
Open the interaction checkerInformation, not medical advice. Do not change prescribed treatment based on this guide.