MAJOR — Use With Caution
Tianeptine and SSRIs/SNRIs — Major Interaction (Serotonin Syndrome Risk)
Evidence level: STRONG
RISKY COMBINATION. Fluoxetine is uniquely dangerous to combine with tianeptine because it has an extremely long half-life (2-6 days for the parent drug, 4-16 days for its active metabolite norfluoxetine). Both drugs affect serotonin through different mechanisms, and fluoxetine's lingering presence means serotonin syndrome risk continues for weeks after you stop taking it.
Tianeptine modulates serotonin reuptake (originally classified as a selective serotonin reuptake enhancer, though this mechanism is debated) and has mu-opioid agonist activity. SSRIs/SNRIs inhibit serotonin reuptake. The combined serotonergic effects create risk of serotonin syndrome. Additionally, tianeptine's opioid activity combined with tramadol-like properties of some SNRIs compounds the danger.
Never combine tianeptine with Fluoxetine (Prozac). Critical warning: because norfluoxetine (fluoxetine's active metabolite) stays in your body for up to 5 weeks, you must wait at least 5 weeks after stopping fluoxetine before starting tianeptine. This is the longest washout requirement of any SSRI. No other SSRI requires this much caution. If you experience agitation, tremor, diarrhea, or fever, seek emergency care.
Take Fluoxetine as prescribed. Tianeptine can typically be taken with a meal, spaced 1-2 hours from the medication for clean absorption. Discuss this combination with your pharmacist for personalized guidance.
Higher risk for: elderly, those on multiple serotonergic drugs, people with liver impairment, CYP2D6 poor metabolizers, recent dose changes, or concurrent use of MAOIs or triptans.
Agitation, restlessness, rapid heart rate, dilated pupils, muscle twitching or rigidity, high body temperature, sweating, diarrhea, confusion. Seek emergency care if these develop.
Disclose tianeptine use to your prescriber. Discuss serotonin syndrome risk. Tianeptine is not approved in the US and has significant abuse potential via its opioid activity. Explore safer antidepressant monotherapy options.
Discuss this combination with your prescriber. They may adjust timing, dosing, or switch to an alternative with fewer interaction risks. Never stop an antidepressant abruptly — taper under medical guidance.
RISKY COMBINATION. Fluoxetine is uniquely dangerous to combine with tianeptine because it has an extremely long half-life (2-6 days for the parent drug, 4-16 days for its active metabolite norfluoxetine). Both drugs affect serotonin through different mechanisms, and fluoxetine's lingering presence means serotonin syndrome risk continues for weeks after you stop taking it.
Take Fluoxetine as prescribed. Tianeptine can typically be taken with a meal, spaced 1-2 hours from the medication for clean absorption. Discuss this combination with your pharmacist for personalized guidance.
Agitation, restlessness, rapid heart rate, dilated pupils, muscle twitching or rigidity, high body temperature, sweating, diarrhea, confusion. Seek emergency care if these develop.
Discuss this combination with your prescriber. They may adjust timing, dosing, or switch to an alternative with fewer interaction risks. Never stop an antidepressant abruptly — taper under medical guidance.
Disclose tianeptine use to your prescriber. Discuss serotonin syndrome risk. Tianeptine is not approved in the US and has significant abuse potential via its opioid activity. Explore safer antidepressant monotherapy options.
Or browse the full interaction database (121,000+ pairs).