CRP and COVID-19: Similarly, the possible adjuvant effect of quercetin has also been investigated in several clinical trials in mild to moderately symptomatic COVID-19 patients, and have revealed beneficial effects including speedy viral clearance, early resolution of COVID-19-associated acute symptoms, and improvement in the serum levels of inflammatory biomarkers such as CRP, LDH, and alkaline phosphatase (ALP) (60–65).