IRCT20200404046932N2 IRCT 2021-10-30 Hakiman e Shargh Research Co. Preventive effect of FLUVAR® on COVID-19 Evaluation of the effect of FLUVAR® in respiratory dosage form on the prevention of COVID-19 respiratory infection 2020-04-20 anticipated 1000 Complete https://irct.ir/trial/58878 interventional Randomization: Not randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Blinding description: The researcher is unaware of which drug is delivered to which volunteer. The formulator of the two drugs is unaware of the recipients of the drugs and the dispenser of the drugs is unaware of the grouping and content of the drugs. The collector of results and the analyzer of data are also unaware of the type of drug groups. 3 COVID-19 Prophylaxis. Intervention 1: Intervention group 1: Three puffs of FLOVAR® spray on each side, equivalent to a total of 500µl of medicine, once a week and receiving an additional dose of medicine in case of contact with a person suspected of having Covid 19 or disease carrier. Intervention 2: Intervention group 2: Three puffs of COLDAMARIS® spray on each side, equivalent to a total of 500µl of medicine, once a week and receiving an additional dose of medicine in case of contact with a person suspected of having Covid 19 or disease carrier. Intervention 3: Control group: Without medicine. No - There is not a plan to make this available Justification or reason for not sharing IPD is Protection of participants' confidential medical information