Aim: The present study aimed at evaluating the efficacy of spirulina 500 mg in reducing the burning sensation and lesion size in oral lichen planus (OLP).
Materials And Methods: A total of 60 subjects who attended the oral medicine specialty clinic with histopathologically confirmed OLP and having symptoms of burning sensation were recruited for the study. They were randomly divided into two groups: group A (30) subjects were prescribed Spirulina 500 mg twice daily along with only a week application of topical triamcinolone acetonide 0.