HYSSOP and POLIUM could help to prevent COVID-19 in high-risk population: The results of a parallel randomized placebo-controlled field trial
This study was conducted to evaluate the effect of HYSSOP (composed of Hyssopus officinalis, Echium amoenum, and Glycyrrhiza glabra L) and POLIUM (contained Teucrium polium L, Cuscuta epithymum Murr, and Cichorium intybus L) combined distilled herbal medicines compared to placebo in prevention of COVID-19. This is a double-blind parallel placebo-controlled field trial conducted on 751 asymptomatic individuals who one of the family members recently had a positive RT-PCR test for COVID-19. They were divided into three groups including POLIUM, HYSSOP, and placebousing random blocks with a 1:1:1 allocation ratio. Participants received daily 5 cc (under 12 years) or 10 cc (over 12 years) of allocated oral medications for 20 days. The primary outcome was the frequency of positive RT-PCR test among participants who became symptomatic. The mean age of participants was 36.6. Nineteen participants get infected by COVID-19 during the intervention; fifteen of them belonged to the placebo and four to the POLIUM group. Fisher's exact test indicated significant differences between HYSSOP and placebo (p<0.001) as well as POLIUM and placebo (p=0.009) groups in terms of COVID-19 confirmed by PCR test. Cox regression model adjusted for confounders illustrated that the hazard of getting infection by COVID-19 in POLIUM and HYSSOP groups decreased by 66% (OR (95% CI): 0.34 (0.12 to 0.94); p=0.038) and 93% (OR (95% CI): 0.07 (0.01to 0.56); p=0.012) respectively, compared to placebo. Oral administration of HYSSOP and POLIUM with the other supportive health care could decrease the risk of getting COVID-19.
COVID-19, HYSSOP, Medicinal herbs, POLIUM, Prevention
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