Lexapro is the brand name for the antidepressant escitalopram. It belongs to a class of drugs called selective serotonin reuptake inhibitors. The medication is prescribed to treat major depressive disorder and generalized anxiety disorder. Its therapeutic effect comes from increasing the amount of serotonin available in the brain. By blocking the serotonin transporter, Lexapro prevents the reabsorption of serotonin into presynaptic neurons. This prolongs serotonergic signaling, which helps improve mood and reduce anxiety symptoms. Over time these neurochemical changes contribute to the drug's clinical benefits.

Lexapro is a selective serotonin reuptake inhibitor marketed for the treatment of depression and generalized anxiety disorder. Its active ingredient escitalopram increases serotonin availability in the synaptic cleft by blocking the serotonin transporter protein. By preventing reabsorption, the drug allows prolonged activation of serotonergic receptors throughout the brain. This sustained receptor stimulation leads to downstream effects such as enhanced mood regulation and reduced anxiety symptoms. Pharmacologically the compound exhibits linear absorption, high bioavailability, and metabolism primarily via the cytochrome p450 enzyme system. The overall therapeutic effect arises from the cumulative modulation of serotonergic tone rather than direct receptor agonism.

Lexapro may cause nausea in some patients. Headache is a frequently reported symptom. Some individuals experience difficulty sleeping. Fatigue can occur especially during the early weeks. Dry mouth is noted among common side effects. Dizziness may be experienced by certain users. Sexual dysfunction such as reduced libido has been observed. Increased sweating is also reported as a typical reaction.

Lexapro may cause nausea, drowsiness, or insomnia in some users. Headaches are also reported frequently during treatment. Some individuals experience mild stomach discomfort or loss of appetite. Fatigue and dizziness can occur, especially when starting the medication. Sexual dysfunction such as decreased libido or difficulty achieving orgasm has been noted. Weight changes, including modest gain or loss, are occasionally observed. Anxiety or nervousness may initially increase before stabilizing. Finally, dry mouth and mild skin rash are among the less serious side effects.