Tramadol Interactions

Tramadol combined with alcohol produces additive central nervous system and respiratory depression, and the combination lowers the seizure threshold, increasing the risk of convulsions, serotonin-related reactions, and life-threatening overdose. Tramadol's serotonergic and noradrenergic activity makes this pairing more hazardous than alcohol with a typical opioid.

Tramadol inhibits serotonin and norepinephrine reuptake, and St. John's Wort increases central serotonergic activity, so combining them can add together and raise the risk of serotonin syndrome. St. John's Wort also induces CYP3A4 and CYP2B6, enzymes involved in tramadol metabolism, which may lower levels of tramadol's active M1 metabolite and weaken pain relief.

Tramadol blocks the reuptake of serotonin, and 5-HTP is a direct precursor that raises serotonin production in the brain. Stacking the two can push serotonin activity too high and trigger serotonin syndrome, a potentially life-threatening reaction.