Answer to Question 1
Answer: The three drugs are fluvoxamine, clomipramine, and fluoxetine. Each exerts an effect on depression and is effective in the treatment of OCD. Each acts to increase the synaptic levels of serotonin. DMI is an antidepressant drug that acts to increase norepinephrine, but not serotonin, but DMI is not an effective drug for OCD.
Answer to Question 2
Answer: Panic attacks can be triggered in people with a history of panic disorder by a variety of treatments that activate the autonomic nervous system, such as through injections of lactic acid, yohimbine, or doxapram or breathing air containing an elevated amount of carbon dioxide.