We have designed this study to evaluate the effects of Melissa herbal drink on the reduction of stress, anxiety disorders and insomnia and also in the increasing of total body`s antioxidant level in burn patients. This study is a randomized clinical trial that has been done on 36 patients. Patient`s inclusion criterion: age of 18 to 70 years, 35% to 55% burn percentage, need of being hospitalized. Exclusion criteria: pregnancy, lactation, intention to become pregnant during the course of the study, consumption of anti-anxiety drugs or antidepressants or sedative 10 days before starting the study, diabetes, asthma, hypo- and hyper-thyroidism, depression, schizophrenia or psychosis, consumption of serotonin-reuptake inhibitors. The selected patients are divided into two groups of 18 individuals based on random number table. Then 250 cc of Melissa tea are given twice a day (mornings and evenings) to the experimental group and 250 cc of black tea are given twice a day (mornings and evenings) to the control group for 20 days. Depression, anxiety and insomnia are measured via Beck`s , Kettle and Petersburg questionnaires respectively, in both groups once in the beginning of intervention and once more after 20 days. Total antioxidant is measured via Spectrophotometry techniques in both groups once at the beginning of the trial and once more after 20 days. Afterwards the results of both groups will be compared.