Citalopram is a widely prescribed antidepressant in the selective serotonin reuptake inhibitor (SSRI) class. It is commonly known by the brand name Celexa. Clinicians use it primarily to treat major depressive disorder and several anxiety-related conditions. For official prescribing details and product information see the professional leaflet.

How it works

Citalopram increases the availability of serotonin, a neurotransmitter involved in mood and emotional regulation, by inhibiting its reuptake into nerve cells. This change in serotonin signaling typically develops over days to weeks and is associated with gradual improvement in mood, sleep, and anxiety symptoms. Like other SSRIs, its effects on mood are indirect and depend on individualized factors such as dose, metabolism, and coexisting medical conditions.

Clinical uses

Approved uses and common clinical indications include:

  • Major depressive disorder and depressive episodes.
  • Generalized anxiety and other anxiety-related disorders; many clinicians also rely on it for long-term symptom control. See general resources about anxiety management here.
  • Panic disorder and panic symptoms; it is frequently used in this setting for panic disorder.

Side effects and precautions

Most patients experience few or mild adverse effects, but common reactions include nausea, dry mouth, drowsiness, vivid dreams, tremor and sexual side effects. Gastrointestinal upset such as nausea is often transient and commonly reported. Important precautions include avoiding combinations that can cause serotonin syndrome (for example, certain MAO inhibitors) and assessing cardiac risk, since higher exposures have been associated with effects on heart rhythm in susceptible people. Clinicians also monitor interactions with other medications and individual risk factors before and during treatment.

Dosing is individualised and typically given orally once daily; response may take several weeks. Regulatory and safety information from health authorities provides current guidance on administration and monitoring practices available here.

Originally introduced in the late 20th century, citalopram became available as a branded medicine and later as a generic. It remains an important option for many patients because of its established efficacy, relatively favorable tolerability, and widespread clinical experience. Patients starting or changing therapy should discuss expected benefits, possible side effects, and monitoring with their prescriber.