The short answer
A specific serotonin-syndrome or high-blood-pressure interaction between SAMe and protriptyline is not established. Discuss a mood supplement with the prescriber before adding it.
What this answer covers
Oral S-adenosylmethionine supplement; not ordinary dietary nutrients.
- Supplement or preparation
- S-Adenosylmethionine
- Medication ingredient
- protriptyline
Separate general advice from exact evidence
NCCIH raises possible interactions between SAMe and serotonin-increasing products. Protriptyline’s exact label does not specifically name SAMe or serotonin syndrome.
Other treatment trials do not settle this pair
A SAMe add-on study in people taking serotonin-reuptake inhibitors found benefit. It does not establish a protriptyline group or quantify this combination’s risks.
High blood pressure is not demonstrated here
Protriptyline has cardiovascular precautions, but the inspected sources do not show that adding SAMe causes hypertension. Do not use a presumed interaction to alter the prescription.
Include mood history and other products
SAMe guidance flags bipolar disorder concerns. Bring your mood history and full medication list to the prescriber before adding it.
Evidence and practical considerations
Side effects & toxicity
Exact serotonin syndrome and hypertension claims remain insufficiently established.
- Exact scope
- Oral S-adenosylmethionine supplement; not ordinary dietary nutrients. with Exact oral protriptyline hydrochloride film-coated tablets. RxNorm IN8886 / PIN203199 hydrochloride tablets. Label describes activating properties and lack of sedative/tranquilizing properties; do not assume other tricyclic sedation applies.
- Medication form and route
- oral
- Timing or duration
- Source-specific single-dose, repeated-dose and observational exposures distinguished.
What remains uncertain
- General serotonergic warnings and other-antidepressant augmentation trials do not establish protriptyline-specific outcomes.
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 protriptyline.
Label describes activating properties and lack of sedative/tranquilizing properties. Cardiovascular, anticholinergic and MAOI precautions; no explicit serotonin syndrome or St John’s wort warning.
How this applies: RxNorm IN8886 / PIN203199 hydrochloride tablets. Label describes activating properties and lack of sedative/tranquilizing properties; do not assume other tricyclic sedation applies.
No universal supplement interval, event rate or preparation equivalence established.
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: Supplement-only reason for review, not a specific protriptyline contraindication.
General serotonergic and bipolar precautions; no exact protriptyline serotonin syndrome or hypertension finding.
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: Indirect trial context, not protriptyline efficacy or toxicity proof.
Mixed serotonin-reuptake-inhibitor augmentation study; no protriptyline group established.
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: 17172c91a4c4a060
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.