Which of the following is classified as NOT being an SSRI?

Cylert, also known as Pemoline, is classified as a central nervous system stimulant and is primarily used to treat attention deficit hyperactivity disorder (ADHD). It is not an SSRI (Selective Serotonin Reuptake Inhibitor), which are a class of medications used primarily to treat depression and anxiety. SSRIs include medications such as Paxil (paroxetine), Prozac (fluoxetine), and Zoloft (sertraline), all of which work by increasing the levels of serotonin in the brain.

In contrast, SSRIs specifically target serotonin reuptake, thereby enhancing mood and alleviating depression and anxiety symptoms. The other options—Paxil, Prozac, and Zoloft—are all well-established SSRIs, making them effective in treating mental health conditions related to serotonin dysregulation. Thus, choosing Cylert as the answer appropriately identifies a medication that does not belong to the SSRI category.