IRCT20190622043968N2 IRCT 2021-12-29 Gonabad University of Medical Sciences The effect of marshmallow and eucalyptus nebulizer on cough intensity in patients Comparison of the effect of marshmallow and eucalyptus nebulizer on cough intensity among patients with COVID-19 disease 2021-11-22 anticipated 45 Complete https://irct.ir/trial/59548 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Samples will be selected from patients admitted to Covid ward by available sampling and assigned to three groups of intervention (A), intervention (B) and control group (C) by block randomized randomization method (numerical six blocks), Blinding description: Patients participating in the study will not know about the intervention group and the drug used. 3 Cough intensity in patients with COVID-19 disease. Intervention 1: Intervention group 1: Marshmallow, Marshmallow nebulizer 40 mg equivalent to 1 cc with 5 cc of normal saline for 15 minutes with a special nebulizer mask once a day. Intervention 2: Intervention group 2: Eucalyptus plant, nebulizer 2% eucalyptus plant with 5 cc of normal saline for 15 minutes once a day with a special nebulizer mask. Intervention 3: Control group: routine interventions. No - There is not a plan to make this available Justification or reason for not sharing IPD is Due to the observance of ethics in research, confidentiality of information as well as university rules, raw data files will not be provided to other researchers.