Question: which one of the following drugs cause weight gain as a side effect?
Answer: Medicines for diabetes, such as insulin, thiazolidinediones, and sulfonylureas.
Antipsychotic medicines such as haloperidol, clozapine, risperidone, olanzapine, and lithium.
Antidepressant medicines like amitriptyline, imipramine, paroxetine, and sertraline.