Used primarily as an antidepressant, it helps regulate mood by increasing serotonin activity in the brain. It is commonly prescribed for major depressive disorder and often used off-label for insomnia due to its sedative effects. Also utilized in managing anxiety and certain types of chronic pain. In veterinary medicine, it treats behavioral disorders in pets, such as anxiety and aggression. Its calming properties make it beneficial for short-term relief of agitation and sleep disturbances.