The short answer
Review SAMe with the prescriber before combining it with nortriptyline. Official guidance describes a possible serotonergic interaction, but a nortriptyline-specific serotonin-syndrome risk has not been quantified.
What this answer covers
Oral S-adenosyl-L-methionine supplementation, distinct from injected regimens and ordinary dietary methionine.
- Supplement or preparation
- S-Adenosylmethionine
- Medication ingredient
- nortriptyline
Why review is advised
NCCIH states that SAMe may interact with medicines that increase serotonin. This is a reason for medication review, not proof that this exact pair caused serotonin syndrome.
Supervised augmentation has also been studied
A six-week trial of SAMe added to serotonin reuptake inhibitors found improved depression outcomes without a significant difference in adverse-event discontinuation. Its abstract does not establish nortriptyline-specific exposure or risk.
Mood history and formulation matter
Discuss bipolar disorder, recent agitation and every mood supplement with the prescriber. Oral SAMe cannot be assumed equivalent to injected research regimens.
Recognize concerning symptoms
Seek urgent medical care for a combination of agitation or confusion, fever or heavy sweating, tremor, muscle rigidity or repeated twitching. These can be signs of serotonin syndrome; a single nonspecific symptom does not establish the diagnosis.
Evidence and practical considerations
Side effects & toxicity
Conditional supervised-use precaution, with exact-pair serotonin-syndrome claim remaining uncertain.
- Exact scope
- Oral S-adenosyl-L-methionine supplementation, distinct from injected regimens and ordinary dietary methionine. with Exact oral nortriptyline hydrochloride capsules. RxNorm IN 7531/PIN 203130 hydrochloride. A nortriptyline measurement during amitriptyline use represents a metabolite exposure, not directly prescribed nortriptyline.
- Medication form and route
- oral
- Timing or duration
- Source-specific single-dose, repeated-dose and observational exposures distinguished.
What remains uncertain
- NCCIH describes a possible interaction; an SRI augmentation trial does not establish nortriptyline coexposure or long-term safety.
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 nortriptyline.
Exact label names tryptophan and St John’s wort in serotonin-syndrome warnings; CYP2D6, cardiovascular and anticholinergic interactions require individual review.
How this applies: RxNorm IN 7531/PIN 203130 hydrochloride. A nortriptyline measurement during amitriptyline use represents a metabolite exposure, not directly prescribed nortriptyline.
No universal supplement interval, event rate or preparation equivalence established. Original label distinguishes warnings from measured pair-specific results.
Source 2: official supplement guidance
nccih.nih.gov · Source check Sep 10, 2026
Population: People considering SAMe.
Possible interaction with serotonin-increasing medicines and supplements; bipolar disorder and limited long-term safety warrant review.
How this applies: General supplement precaution applicable to review of this antidepressant.
Possible interaction warning, not a documented nortriptyline-specific serotonin-syndrome case.
Source 3: original human study
pubmed.ncbi.nlm.nih.gov · Source check Sep 10, 2026
Population: 73 serotonin reuptake inhibitor nonresponders with major depression.
Response and remission favored SAMe; discontinuation due to adverse events was not significantly different.
How this applies: Only the named drug, preparation, route and measured endpoints apply.
Abstract does not establish nortriptyline coexposure or drug-specific adverse-event rates. Supervised short trial cannot establish unmonitored augmentation safety.
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: f179dd7294109fd4
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.