Fluoxetine ↑ amitriptyline x2 and nortriptyline metabolite x9. The danger is arrhythmia. 5-HT toxicity Sx would not be life threatening.

1-hr of inhaled nitrous oxide is efficacious for depression within 2 hr. NO2 is an NMDA receptor antagonist like (es)ketamine.

Among the commonly prescribed antipsychotics, 3 have moderate risk of QT prolongation: haloperidol, quetiapine, and ziprasidone (24 mascots)