COVID-19(2) therapy(2) Result(2) Fever(1) incubated(1) respiratory infections(1) recovered patient(1) herbal medicine(1) addition(1) moderate(1) SARS-CoV-2 RNA(1) analysed(1) Safe(1) Efficacy(1) 48 hours(1) comparable(1) Visual Analogue Scale(1) Open-label(1) cell culture supernatant(1) baseline(1) Registered(1) nasal congestion(1) Sinupret extract (SINx)(1) effective(1) COVID 19(1) symptomatic(1) restrict(1) severity of symptom(1) greater decrease(1) reported(1)