Antidepressants are medications designed to help alleviate symptoms of depression and other mood disorders. They work by balancing chemicals in the brain, such as serotonin and norepinephrine, which play a key role in regulating mood. There are several types of antidepressants, including selective serotonin reuptake inhibitors (SSRIs) and tricyclic antidepressants, each with different mechanisms of action and potential side effects. While antidepressants can be effective for many individuals, they may not work for everyone and can take several weeks to show results. It's important for patients to work closely with their healthcare provider to find the right medication and dosage, as well as to monitor any side effects or changes in mood.