Antidepressants are a drug class that balance certain chemicals in the brain that affect mood and behavior.
These medicines were first developed in the 1950s. Today, experts estimate that about 10 percent of Americans takes an antidepressant.
The medicines are used to treat a variety of conditions, including:
Obsessive compulsive disorder (OCD)
Social anxiety disorder
Major depressive disorder
Post-traumatic stress syndrome (PTSD)
Attention-deficit hyperactivity disorder (ADHD)