• Ray WA, Chung CP, Murray KT, Hall K, Stein CM. High-Dose Citalopram and Escitalopram and the Risk of Out-of-Hospital Death. The Journal of clinical psychiatry. 2016 Oct 11. PMID: 27736049 [PubMed].

Abstract 

Studies demonstrating that higher doses of citalopram (> 40 mg) and escitalopram (> 20 mg) prolong the corrected QT interval prompted regulatory agency warnings, which are controversial, given the absence of confirmatory clinical outcome studies. We compared the risk of potential arrhythmia-related deaths for high doses of these selective serotonin reuptake inhibitors (SSRIs) to that for equivalent doses of fluoxetine, paroxetine, and sertraline.