Escitalopram is a medication commonly prescribed to treat depression and anxiety disorders. It belongs to a class of drugs known as selective serotonin reuptake inhibitors (SSRIs), which work by increasing the levels of serotonin, a neurotransmitter that helps regulate mood. Typically taken as a daily oral tablet, escitalopram may take several weeks to show its full effects. Common side effects can include nausea, fatigue, and sleep disturbances. It is important for patients to follow their healthcare provider's instructions and discuss any concerns or side effects experienced during treatment.