Study aim: Determination of the effect of curcumin-piperine supplementation on disease duration, severity, and clinical signs and inflammatory factors in patients with coronavirus (COVID-19): A randomized, double-blind, placebo-controlled clinical trial study Design: This is a randomized, placebo-controlled, double-blind parallel-group clinical trial. One hundred participants will be randomly allocated to receive curcumin-piperine supplement per day (25 inpatients and 25 outpatients) or placebo (25 inpatients and 25 outpatients). Settings and conduct: In this study, patients with coronavirus will be recruited from hospitals of Isfahan University of Medical Sciences. Subjects will be stratified according to gender. Random assignment will be done by the use of a table of random numbers. The enrolling participants, and assigning participants to the groups will be carried out by a relevant specialist.The curcumin-piperine supplement and its placebos will be packed in similar boxes, and the researcher and the patients will not be aware of the content of the pack until the end of the study. Participants/Inclusion and exclusion criteria: Inclusion criteria: Tendency to participate in the study; People aged 18-65 years; Diagnosis of Covid-19 based on the PCR test. Exclusion criteria: Age less than 20 and more than 75 years; Taking warfarin; Sensitivity to herbal products such as turmeric and pepper Intervention groups: Individuals will be randomly assigned to two groups to receive the curcumin-piperine supplement (1000 mg/day of curcumin and 10 mg/day of piperine) or placebo (1010 mg of maltodextrin) for 2 weeks. Main outcome variables: CT of the chest, body temperature, length of hospital stay, hs-CRP, ESR, ALT, AST, LDH, BUN, creatinine, CBC, blood oxidative stress indices ( SOD, MDA, TAC), Albumin, Severity of the disease, severity and number of coughs