Escitalopram is a drug used in the treatment of generalised anxiety disorder and depression. It belongs to the SSRI class of drugs, which work by inhibiting the reuptake of the neurotransmitter serotonin. This means serotonin is more available in the brain. Common side effects with escitalopram include nausea, headache and weight gain.Escitalopram is an antidepressant taken orally to reduce stress, depression and anxiety levels. It works by maintaining serotonin in the brain at the safe levels. Patients begin the treatment with a low dose and slowly increase the dosage at regular intervals. The doctor gives the directions of when and how to do so in a safe manner. Users should complete the entire medication even if they feel better before it is over. The professional will reduce the treatment gradually as the patient approaches the end of the prescription. Side effects include headaches, changes in sleep patterns, mood swings and a feeling of tiredness. In some cases, though rare, Escitalopram can make patients get more depressed and suicidal. Treatment should be stopped immediately if this occurs.