Lozano Ortiz Disclosure References The author reports no conflicts of interest in this work. 1. Goto N, Yoshimura R, Kakeda S, et al. Six-month treatment with atypical antipsychotic drugs decreased frontal-lobe levels of glutamate plus glutamine in early-stage first-episode schizophrenia. Neuropsychiatr Dis Treat. 2012;8:119–122. Dovepress 2. Lozano, et al. Study of the influence of drug treatment with antidepressants and antipsychotics on plasma urea. Presentation at the 55th National Congress of the Spanish Association of Hospital Pharmacists, Madrid, Spain, October 19–22, 2010. 3. Lozano R. The action of nitrogen on glutamate concentration: Adding to the discussion. Undersea Hyperb Med. 2012, Vol. 39, No.1:618 (in press). Neuropsychiatric Disease and Treatment Publish your work in this journal Neuropsychiatric Disease and Treatment is an international, peer- reviewed journal of clinical therapeutics and pharmacology focusing on concise rapid reporting of clinical or pre-clinical studies on a range of neuropsychiatric and neurological disorders. This journal is indexed on PubMed Central, the ‘PsycINFO’ database and CAS. Submit your manuscript here: http://www.dovepress.com/neuropsychiatric-disease-and-treatment-journal Dovepress The manuscript management system is completely online and includes a very quick and fair peer-review system, which is all easy to use. Visit http://www.dovepress.com/testimonials.php to read real quotes from published authors. 246 submit your manuscript | www.dovepress.com Dovepress Neuropsychiatric Disease and Treatment 2012:8