Schizophrenia Clinical Trial
Official title:
A Placebo-Controlled Trial of Folate With B12 in Patients With Schizophrenia With Residual Symptoms in Ethiopia
The investigators propose to conduct a randomized Sequential Parallel Design for Double-Blind Phase fixed dose, 4-month trial of folate plus B12 as add-on therapy in 200 Ethiopian subjects with schizophrenia with stable residual positive or negative symptoms.
This is a 16-week, randomized, double-blind, placebo-controlled study of Folate 2mg plus B12 400mcg, as an adjunctive therapy in approximately 240 consecutive outpatients with schizophrenia from Amanuel Hospital, which is based at Addis Ababa, Ethiopia will be enrolled and screened for eligibility. The goal is to randomize and complete 200 subjects from the 240 enrolled. A Sequential Parallel Design for Double-Blind Phase will be utilized. During the first phase of double-blind adjunctive treatment, eligible patients (n=200) are randomized to adjunctive treatment with either folate and vitamin B12 (n=60) or placebo (n=150), with a 2:3:3 ratio for random assignment to the treatment sequences drug/drug (DD; n=70), placebo/placebo (PP; n=70), and placebo/drug (PD; n=75), while all continue to receive their antipsychotic agent for the entire duration of the study. Assuming a 10% drop-out rate during the first phase, 126 patients on placebo will complete the first 56-day phase, and 54 patients on folate and vitamin B12 will complete the first 56-day phase. ;
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