A patient of parkinsonism is managed with L-dopa. If Vit. B-complex is administered concurrently-
The action of L-dopa in brain will be potentiated
Decarboxylation of L-dopa in brain will be decreased
Side effects will be ameliorated
Decreased efficacy will result
Ans. is 'd' i.e., Decreased efficacy will result "Pyridoxine abolishes the therapeutic effect of levodopa by enhancing peripheral decarboxylation of levodopa".