Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
SSRIs are a type of antidepressant medication that increase the level of serotonin, a neurotransmitter associated with feelings of well-being and happiness, in the brain by preventing its reabsorption into the neurons.