The effects of Melissa officinalis on Stress, Anxiety, Depression, sleep disturbances and Compassion Fatigue among Nurses

INTERVENTION: Intervention 1: Intervention group: Nurses will be given lemon balm tea in the form of a 3 gram bag from Newsha twice (morning and evening) for 21 days. Intervention 2: Control group: Nurses will be given black tea in the form of a 3 gram bag (Tea‐bag) from Newsha company twice (morning and evening) for 21 days. CONDITION: Condition 1: Stress. Condition 2: Anxiety. Condition 3: sleep disorders. Condition 4: sleep disorders. Condition 5: sleep disorders. Condition 6: Stress. ; Reaction to severe stress, and adjustment disorders ; Anxiety disorder due to known physiological condition ; Sleep disorders not due to a substance or known physiological condition ; Sleep disorders ; Circadian rhythm sleep disorders ; Acute stress reaction F06.4 F43.0 G47.2 PRIMARY OUTCOME: Anxiety score on DASS‐21. Timepoint: At the beginning of the study and 21 days after starting to consume lemon balm. Method of measurement: DASS‐21 questionnaire. Depression score on DASS‐21. Timepoint: At the beginning of the study and 21 days after starting to consume lemon balm. Method of measurement: DASS‐21 questionnaire. Stress score on DASS‐21. Timepoint: At the beginning of the study and 21 days after starting to consume lemon balm. Method of measurement: DASS‐21 questionnaire. SECONDARY OUTCOME: Compassion fatigue score. Timepoint: At the beginning of the study and 28 days after giving lemon balm tea. Method of measurement: Figley Compassion Fatigue Questionnaire. Sleep Disorders Score. Timepoint: At the beginning of the study and 28 days after giving lemon balm tea. Method of measurement: Petersburg Sleep Quality Questionnaire. INCLUSION CRITERIA: Having at least a degree in nursing ? Having one year of work experience ? At least six months of care for hospitalized patients with coronavirus