IRCT20221203056699N1 IRCT 2022-12-31 Shiraz University of Medical Sciences Inhaling Sour Lemon Essential Essence and Level of Consciousness Comparison of the Effectiveness of Inhaling Sour Lemon Essential Essence and Placebo on the Level of Consciousness in Adult Patients with Mild to Moderate Decreased Level of Consciousness 2022-12-21 anticipated 68 Complete https://irct.ir/trial/67241 interventional Randomization: Not randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Supportive, Blinding description: The intervention is carried out by a research assistant other than the researcher evaluating the Glasgow coma score before and after the intervention. As a result, the impact assessment researcher is unaware of the type of intervention. Also, as much as possible, the clinical caregiver is kept unaware of the type of intervention. The data analyst will do his work based on the anonymous codes and does not know the type of intervention performed on each code that is a patient. The legal guardian of the patient is fully aware of the study and its purpose, but they are not informed about the type of essential oil (lemon or normal saline). 2-3 Decrease Level of Consciousness. Intervention 1: intervention will be done within 5 days; 3 times a day and 20 minutes each time (in order to compensate for limitation of the hospitalization time, the frequency of the intervention has been increased to three times). In this regard, for the intervention group, the researcher first placed cotton soaked with 5 drops of 68.2% lemon essential oil from Kashan Barij essence medicine company, in a porous box at a distance of 20-40 cm from the patient and every day at 8:30, 12:30, 16:30 will be used and inhaled. Intervention 2: within 5 days; 3 times a day and 20 minutes each time, for the control group, by the researcher, cotton soaked with 5 drops of normal saline (as a placebo) was placed in a porous box at a distance of 20-40 cm from the patient and every day at 8:30, 12 :30, 16:30 will be used and inhaled. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is If needed, people can access the study data by contacting the relevant supervisor (Dr. Mahnaz Rakhshan).