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has been cited by the following article:

• TITLE: Vitamin B12 Deficiency in Resistant Schizophrenia in Tropics

  AUTHORS: Thirunavukarasu Kumanan, Naveen Thomas, Selladurai Pirasath

  KEYWORDS: B12 Deficiency, Schizophrenia, Hyperhomocysteinemia

  JOURNAL NAME: Open Access Library Journal, Vol.4 No.3, March 14, 2017

  ABSTRACT: Vitamin B12 deficiency and hyperhomocysteinemia are common in tropical developing countries. In prevalence study, among Indian population by Yajnik and colleagues, 67% of men had low vitamin B12 concentration and 58% had hyperhomocysteinemia [1]. Here, we report two patients with vitamin B12 deficiency presented with symptoms of schizophrenia and required very high doses of antipsychotic medication surprisingly without any anticipated extra pyramidal side effects. The initial requirement of high dose of antipsychotic medication significantly came down after adding parenteral cobalamin supplementation.