Which of the following SSRIs is known by the brand name "Prozac"?

Fluoxetine is the only selective serotonin reuptake inhibitor (SSRI) known by the brand name "Prozac." It was one of the first SSRIs developed and remains widely used for the treatment of major depressive disorder, anxiety disorders, and other mental health conditions. The mechanism of action involves increasing the levels of serotonin in the brain by inhibiting its reuptake into the presynaptic cell. This can lead to an improvement in mood and reduction in anxiety symptoms.

Other SSRIs listed have different brand names and are distinct medications. Sertraline is branded as "Zoloft," paroxetine as "Paxil," and citalopram as "Celexa." Each of these medications has unique pharmacological profiles, indications, and side effects, making it important for healthcare providers to choose the appropriate SSRI for individual patient needs. Understanding the specific branding and pharmacological properties of these medications can greatly assist in clinical practice.