This question is more directed toward drug-drug interactions and the role of Cytochrome P450:
Atomoxetine is metabolized by CYP2D6, so we should avoid medications inhibiting CYP2D6.
CYP2D6 inhibitors are classified into following three categories:
(A) Strong inhibitors: one that causes a > 5-fold increase in the plasma AUC values or more than 80% decrease in clearance.
- Bupropion,
- Fluoxetine and
- Paroxetine
(B) Moderate inhibitors: one that causes a > 2-fold increase in the plasma AUC values or 50-80% decrease in clearance.
(C) Weak inhibitors: one that causes a > 1.25-fold but < 2-fold increase in the plasma AUC values or 20-50% decrease in clearance.
Based on this information, Sertraline is the best option available