Tianeptine is primarily used in the treatment of major depressive disorder, offering antidepressant effects by modulating glutamate levels in the brain. It helps improve mood and reduce symptoms of depression, such as sadness, fatigue, and loss of interest in daily activities. Additionally, it is sometimes prescribed for anxiety disorders due to its anxiolytic properties. Tianeptine has also shown potential in alleviating cognitive impairments associated with depression, enhancing memory and focus in some patients. Its unique mechanism of action makes it a valuable option for individuals who do not respond well to traditional antidepressants.