An antidepressant is the name given to a medicine that can help relieve the symptoms of depression, such as low mood, anxiety, and worthlessness.
Antidepressants are classified into different types depending on their structure and the way that they work.There are at least seven types of antidepressant.

Drug classes:

• miscellaneous antidepressants
• monoamine oxidase inhibitors
• phenylpiperazine antidepressants
• selective serotonin reuptake inhibitors
• serotonin-norepinephrine reuptake inhibitors
• tetracyclic antidepressants
• tricyclic antidepressants