Major
Established
Description
Sertraline and tramadol together significantly increase serotonergic tone, posing a clinically meaningful risk of serotonin syndrome.
Mechanism
Sertraline inhibits SERT-mediated serotonin reuptake; tramadol also inhibits serotonin and norepinephrine reuptake, resulting in additive serotonin accumulation in CNS synapses.
Clinical Significance
Multiple published case reports and regulatory warnings document serotonin syndrome with this combination.
Management
Avoid concurrent use; if tramadol is unavoidable, start at the lowest dose, titrate slowly, and monitor closely for signs of serotonin toxicity.