NO CYP450-INDUCED DRUG INTERACTIONS ARE EXPECTED WITH LINEZOLID. AZTREONAM & GENTAMICIN EFFECTS ARE NOT ALTERED WHEN ADMINISTERED TOGETHER WITH LINEZOLID. LINEZOLID IS A REVERSIBLE, NONSELECTIVE INHIBITOR OF MONOAMINE OXIDASE. THEREFORE, LINEZOLID HAS THE POTENTIAL FOR THE PRESSOR RESPONSE TO INDIRECT-ACTING SYMPATHOMIMETIC AGENTS, VASOPRESSOR OR DOPAMINERGIC AGENTS. A SIGNIFICANT PRESSOR RESPONSE HAS BEEN OBSERVED IN NORMAL ADULT SUBJECTS RECEIVING LINEZOLID AND TYRAMINE DOSES OF MORE THAN 100 MG, PHENYLPROPANOLAMINE, PSEUDOEPHEDRINE, DOPAMINE, EPINEPHRINE. CO-ADMINISTRATION OF LINEZOLID AND SEROTONERGIC AGENTS WAS NOT ASSOCIATED WITH SEROTONIN SYNDROME.