A comparison of the discriminative stimulus properties of l-5-hydroxytryptophan in the presence of either citalopram or Ro 4-4602.
Comparative StudyAnimal study
Names both 5-HTP and Citalopram in its title.
Supplement × Prescription·Evidence index
PubMed indexes 6 records that name 5-HTP and Citalopram together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.
Every statement below is attributed to a named, dated, linked source.
This page lists published research relevant to 5-HTP and Citalopram. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.
Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.
Names both 5-HTP and Citalopram in its title.
“In conclusion, R-citalopram inhibited the escitalopram-induced increase of 5-HT activity in functional, as well as behavioural, animal models. The mechanism involved in this interaction is currently unknown, but may be related to an improved clinical effect seen with escitalopram in comparison with citalopram.”
Names both 5-HTP and Citalopram in its title.
Names both 5-HTP and Citalopram in its title.
“Although 5-HT has an overall inhibitory effect on aggression, the animal's genetic background, drug, treatment time, aggression inducing paradigm, and aggression type are critical variables that influence and modify this effect.”
Names 5-HTP and Citalopram together in an interaction, co-administration, or pharmacokinetic context.
“Low 5-HT function in NMRI mice may account for their insensitivity to SSRIs in the tail suspension test. As the tail suspension test is a predictor of clinical efficacy, the current data suggest that 5-HTP adjunct treatment may benefit SSRI treatment refractory patients.”
Names 5-HTP and Citalopram together in an interaction, co-administration, or pharmacokinetic context.
“6. We propose that the kinetic interaction of R- and S-citalopram with SERT is a critical factor contributing to the antagonistic effects of R-citalopram on S-citalopram in vitro and in vivo.”
Names 5-HTP and Citalopram together in an interaction, co-administration, or pharmacokinetic context.
Search-based evidence indexes have real limits, and it is worth being explicit about them:
NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers 5-HTP, Citalopram, and several hundred other substances.
The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.