Exact mechanism of action unknown. Potent serotonin 5HT2 and 5HT3 antagonist, moderate muscarinic antagonist. Side effects due to antihistaminergic and α-1 antagonist properties
Mirtazapine
Quetiapine
Aripiprazole
Venlafaxine
Bupropion
Buspirone
Duloxetine
Alprazolam