Complex sentence: Since the olanzapine entry into psychopharmacology, many psychiatrists have been adding low dose olanzapine to antidepressants, and other atypical antipsychotics, such as aripiprazole, have shown promise in treating refractory depression, but come with serious side effects.
Split into simpler sentences: Since the olanzapine entry into psychopharmacology, many psychiatrists have been adding low dose olanzapine to antidepressants and other atypical antipsychotics such as aripiprazole. These have shown promise in treating refractory depression but come with serious side effects.