A randomized, double-blind, placebo-controlled trial in 153 older adults taking the antidepressant citalopram found daily supplementation with 500 g vitamin B 12 , 2 mg of folic acid, and 25 mg of vitamin B6 for one year did not reduce the severity of depressive symptoms but increased the response to drug treatment and helped to prevent symptom relapse (112), suggesting B-vitamin supplementation might provide some benefit as an adjunct therapy
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Comment: A commenter stated that they were concerned with the placement of CPT code 92540 in APC 5721 because the time and resources required to perform CPT 92540 are clinically analogous to the electrophysiological tests in APC 5722
Wang G, Meyer JG, Cai W, Li ME, Softic S, Kahn CR