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5 Htp × Tricyclic Antidepressants

MODERATE INTERACTION — Probable Evidence

⚠️ Mechanism

5-HTP increases serotonin production; tricyclics may enhance serotonin transmission. Combined risk of serotonin syndrome.

📋 Effect

Possible serotonin syndrome

💊 Management

Avoid combination. If used, monitor closely for serotonin syndrome symptoms.

Plain Language Summary

This combination can be dangerous because both substances increase the amount of serotonin in your body. This can lead to a serious condition called serotonin syndrome.

Source

Sternberg EM et al. J Neural Transm 1981

Supporting Research

The impact of 5-hydroxytryptophan supplementation on sleep quality and gut microbiota composition in older adults: A randomized controlled trial PMID:38309227 DOI:10.1016/j.clnu.2024.01.010 2024
The Efficacy of Different Triptans for the Treatment of Acute Headache in Pediatric Migraine: A Systematic Review PMID:37209053 2023
The effect of therapeutic massage combined with conventional therapy in children with functional dyspepsia: a systematic review and meta-analysis PMID:40331196 DOI:10.3389/fphar.2025.1554438 2025
Sleep disorders in children PMID:21418676 2010
Investigating genetic links between biological aging and adverse pregnancy outcomes PMID:39920341 DOI:10.1007/s10522-025-10198-y 2025
The effect of increased serotonergic neurotransmission on aggression: a critical meta-analytical review of preclinical studies PMID:19404614 DOI:10.1007/s00213-009-1543-2 2009
Drugs for preventing migraine headaches in children PMID:14583952 2003
Animal models of the serotonin syndrome: a systematic review PMID:24004848 DOI:10.1016/j.bbr.2013.08.045 2013
Medical Disclaimer: This interaction record is for informational and educational purposes only and does not constitute medical advice. Drug-supplement interactions can be dangerous. Always consult your healthcare provider or pharmacist before combining any supplement with prescription medications. Do not stop or change any medication without professional guidance.