“…In addition, there is one clinical trial from India [22] , and four RCTs conducted in Italy [23] , [24] , India [25] and Turkey [26] . Based on the administration route, eight studies were conducted using major autohemotherapy [18] , [19] , [21] , [22] , [23] , [25] , [28] , [29] , two studies using rectal insufflation [19] , [27] , and one study using intravenous ozonated saline [22] , one study using ozone nebulization [26] and one study using the combination of minor autohemotherapy and rectal insufflation [25] . Standard therapy consists of corticosteroids, antivirals (lopinavir, ritonavir, remdesivir), antibiotics (such as azithromycin), and vitamin supplements (vitamin E, vitamin C, vitamin D, and zinc) [18] , [19] , [20] , [21] , [22] , [23] , [24] , [25] , [26] , [27] , [28] , [29] , [30] .…”