MAJOR — Use With Caution
Tianeptine and SSRIs/SNRIs — Major Interaction (Serotonin Syndrome Risk)
Evidence level: STRONG
RISKY COMBINATION. Venlafaxine is an SNRI that blocks reuptake of both serotonin and norepinephrine. Combined with tianeptine's serotonin modulation and mu-opioid activity, the risk multiplies: serotonin syndrome from the serotonergic overlap, plus norepinephrine excess that can spike blood pressure and heart rate. Venlafaxine's dose-dependent effects make this especially unpredictable.
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 Venlafaxine (Effexor). At doses below 150mg, venlafaxine acts primarily as an SSRI; above 150mg, significant norepinephrine reuptake inhibition kicks in. Either way, the serotonin overlap with tianeptine is dangerous. Venlafaxine also has a short half-life (5 hours) causing harsh withdrawal — do not abruptly stop either drug. A doctor-supervised washout of at least 7 days from venlafaxine is needed before starting tianeptine.
Take Venlafaxine 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. Venlafaxine is an SNRI that blocks reuptake of both serotonin and norepinephrine. Combined with tianeptine's serotonin modulation and mu-opioid activity, the risk multiplies: serotonin syndrome from the serotonergic overlap, plus norepinephrine excess that can spike blood pressure and heart rate. Venlafaxine's dose-dependent effects make this especially unpredictable.
Take Venlafaxine 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).