All SSRIs work by boosting serotonin availability in the brain, but that shared mechanism doesn’t mean they behave the same way once they get there. This episode compares seven SSRIs used for depression, OCD, panic disorder, and generalized anxiety disorder, looking at how differences in half-life, receptor activity, and side-effect profile shape how each drug actually functions in the brain and body. We dig into pediatric and geriatric considerations, drug interactions, discontinuation syndrome, and serotonin toxicity — a dangerous overload of serotonergic activity in the central nervous system. It’s a close look at how subtle pharmacological differences within a single drug class can produce meaningfully different outcomes for the brain.